PLEASE HELP:
light travels at a speed of 1.86 x 10^5 miles per second. it takes about 15,000 seconds for the light to reach Neptune. write your answer in scientific notation.

The probability that the system can decode the correct message is approximately 0.9477.

The random variable N denotes the number of error-free transmissions for a single meter upon receiving the wake-up call.

Since each transmission is error-free with probability p=0.9 and the transmissions are independent, the number of error-free transmissions follows a binomial distribution with parameters n=4 (number of trials) and p=0.9 (probability of success in each trial).

The probability mass function (PMF) of N is given by:

P(N=k) = (4 choose k) × [tex]0.9^k[/tex] × [tex]0.1^{(4-k)}[/tex], for k = 0, 1, 2, 3, 4

where (4 choose k) is the binomial coefficient, which represents the number of ways to choose k successes out of 4 trials.

The error correction scheme can decode the correct message if at least 3 out of 4 transmissions are error-free. Let X be the number of error-free transmissions for a single meter.

Then the probability that the system can decode the correct message is:

P(X >= 3) = P(X = 3) + P(X = 4)

To find these probabilities, we use the PMF of N from part 1:

P(X = 3) = P(N = 3) + P(N = 4) = (4 choose 3) × [tex]0.9^3[/tex] × 0.1 + (4 choose 4) × [tex]0.9^4[/tex] × [tex]0.1^0[/tex] = 0.2916

P(X = 4) = P(N = 4) = (4 choose 4) × [tex]0.9^4[/tex] × [tex]0.1^0[/tex] = 0.6561

Therefore, the probability that the system can decode the correct message is:

P(X >= 3) = P(X = 3) + P(X = 4) = 0.2916 + 0.6561 = 0.9477.

So the probability that the system can decode the correct message is approximately 0.9477.

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Answer:b or 2 option

Step-by-step explanation= $16x3=48 and $8x8=64 adding those together equals $112 and that is what answer b says i would really apreaciate branliest.

State: 99% CI for the true difference in proportions where p1 = the proportion of all U.S. men who can identify India on the map and p2 = the proportion of all US women who can identify India on the map. The main answer is (-0.216, 0.056).

The 95% confidence interval for the true difference in the proportion of U.S. men and women who can identify India on a map is (-0.206, 0.066). This means that we are 95% confident that the true difference in proportions lies between -0.206 and 0.066.

To construct this confidence interval, we use the formula:

CI = (p1 - p2) ± z*SE

where p1 and p2 are the sample proportions for men and women respectively, z is the critical value for a 95% confidence level (1.96), and SE is the standard error of the difference in proportions.

The sample proportion for men is 27/90 = 0.3, and for women it is 38/100 = 0.38. Therefore, p1 - p2 = -0.08. The standard error is:

SE = sqrt(p1*(1-p1)/n1 + p2*(1-p2)/n2) = sqrt(0.30.7/90 + 0.380.62/100) = 0.084

Substituting these values into the formula, we get:

CI = (-0.08) ± 1.96*0.084 = (-0.206, 0.066)

Thus, we can say with 95% confidence that the true difference in proportions of U.S. men and women who can identify India on a map lies between -0.206 and 0.066. This means that there may not be a significant difference between the two proportions.

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Based on the provided data, the population standard deviation is 6.0 and the population variance is 36.0.

To calculate the population standard deviation and variance using a TI-83, TI-83 Plus, or TI-84 calculator, follow these steps:

1. Press the "STAT" button, and then select "Edit" to enter the data.

2. Enter the ages of the students into a list. For example, you could enter the ages into list L1.

3. Once you have entered the data, press the "STAT" button again, and then select "CALC."

4. Choose "1-Var Stats" and enter the list name that contains the data (L1 in this case). Press "ENTER" to see the result.

5. The calculator will display a list of statistics, including the population standard deviation (σx) and the population variance (σx²). Round these values to one decimal place.

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Answer:

Step-by-step explanation:

The number 10111.011 in base 2 is already in binary, so no conversion is necessary.

In slope-intercept form, the equation of the line is y = (5/4)x + 6 1/2.

An equation in mathematics is a statement that two expressions are equal. An equation can be written in the form of a mathematical expression on the left side equal to a value or another mathematical expression on the right side. There are different types of equations, including linear equations, quadratic equations, and exponential equations, among others. Equations can be solved for a specific variable, and the solution is the value of the variable that makes the equation true. The process of solving an equation involves isolating the variable on one side of the equation and finding its value.

Here,

The slope-intercept form of a line is given by y = mx + b, where m is the slope of the line and b is the y-intercept, which is the point at which the line intersects the y-axis. To find the equation of a line in slope-intercept form given its slope and a point on the line, we can use the following steps:

Use the point-slope form of a line: y - y1 = m(x - x1), where (x1, y1) is a point on the line and m is the slope.

Plug in the slope and the point: y - 6 = (5/4)(x + 4).

Solve for y: y = (5/4)x + (26/4).

Simplify the equation: y = (5/4)x + 6 1/2.

So, the equation of the line in slope-intercept form is y = (5/4)x + 6 1/2.

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The relation that is a function is D (see image below).

If any vertical line passes through more than one point on a graph, then the relation is not a function. Conversely, if every vertical line intersects the graph at most one point, then the relation is a function.

Applying the vertical line test, if we place a vertical line across each graph given, only the graph in option D (as shown in the image below) will have the the vertical line intersects it at most one point.

Therefore, the correct option is D. (see image below).

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The coordinates of the child after 75 seconds in a carousal , if child enters at the point (0,1) are (-1, 0).

According to question, the child enters at the point (0,1), that is, on the due north position.

1 revolution = 1 minute

75 seconds = 75/60 = 5/4 of a minute

which means one full turn and then 1/4 turn.

Assuming the center of rotation is the origin.

If so, then 1/4 of a full turn means we rotate from (0,1) to (-1,0)

This is if we move counterclockwise.

The angle of rotation is (1/4)*360 = 90 degrees.

corresponds to the compass positions of North which means at (-1, 0)

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The cumulative distribution function of t, the number of years to maturity for a randomly selected bond is a. 1/4, b. 3/4, c. 1/2, d. 1/3.

The probability of a randomly selected bond maturing exactly after 5 years is 1/4. The probability of a randomly selected bond maturing after more than 3 years is 3/4. The probability of a randomly selected bond maturing between 1.4 and 6 years is 1/2.

a) P(T=5) = F(5) - F(4) = 3/4 - 1/2 = 1/4

b) P(T>3) = 1 - P(T≤3) = 1 - F(3) = 1 - 1/4 = 3/4

c) P(1.4 < T < 6) = F(6) - F(1.4) = 3/4 - 1/4 = 1/2

d) P(T≤5 | T≥2) = P(2 ≤ T ≤ 5) / P(T≥2) = (F(5) - F(2)) / (1 - F(2)) = (3/4 - 1/4) / (1 - 1/4) = 1/3

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The question is -

An investment firm offers its customers municipal bonds that mature after varying numbers of years. Given that the cumulative distribution function of t, the number of years to maturity for a randomly selected bond is:

f ( x ) = ⎧  0        t < 1

           ⎪ 1 / 4     1 ≤ t < 3

           ⎪ 1 / 2     3 ≤ t < 5

           ⎨ 3 / 4    5 ≤ t < 7

           ⎩  1           t ≥ 7

Find: a) P(T = 5) b) P(T > 3) c) P(1.4 < T < 6) d) P(T ≤ 5 | T ≥ 2)

Answer:

the third one

Step-by-step explanation:

(2 × 10) + (5 × 1) + (3 × 0.1) + (6 × 0.01) + (7 × 0.001)

20+5+0.3+0.06+0.007=25.367

Answer:

the third number will be correct answer

To calculate the average speed of the lap record, we need to know the distance covered and the time taken.

Distance = 5.303 km

Time = 1 minute and 24 seconds = 84 seconds

To convert seconds to hours, we divide by 3600 (the number of seconds in an hour):

[tex] \frac{84 \: seconds \:}{3600} = 0.02333 \: hours[/tex]

Now we can calculate the average speed:

[tex]Average \: speed = \frac{d}{t} = \frac{5.303km}{0.02333} [/tex]

Average speed = 227.59 km/h

The scale factor of for the given scaled reproduction of figure {P} to figure {Q} is 7/10.

Scale factor is a constant value that is used to dilate (enlarge or reduce) the image size. Mathematically, for the scale factor -

{K} > 1 : Enlargement

{K} < 1 : Shrinking

{K} = 1 : Preserved

Given is figure {Q} is a scaled reproduction of figure {P}.

We can write the ratio of their corresponding sides as constant. So, we can write, the scale factor as -

K = 14/20

K = 7/10

Therefore, the scale factor of for the given figure {P} to figure {Q} is 7/10.

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{QUESTION IN ENGLISH -

Figure Q is a scaled reproduction of Figure P. What is the number by which the measurement of Figure Q must be multiplied to obtain Figure P?

Figure P

20cm

Figure Q

14cm

The distance between each of the 9 tables is given as follows:

625 meters.

The distance is obtained applying the proportions in the context of the problem.

A proportion is applied as the distance is calculated by the division of the total distance by the number of spaces, which is one less than the number of tables.

The parameters for this problem are given as follows:

Hence the distance between each of the 9 tables is obtained as follows:

5000/8 = 625 meters.

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Answer:

11.85  (3)

Step-by-step explanation:

The correct equation that represents this situation is:

3.90 + a = 15.75

where "a" represents the amount that Andreas spent on art supplies.

To solve for "a", we can subtract 3.90 from both sides:

a = 15.75 - 3.90

a = 11.85

Therefore, Andreas spent $11.85 on art supplies.

It is not possible to give an exact answer to this question without knowing the specific function s. However, in general, the slope of the tangent line to a function s at a specific point t can be found by taking the derivative of the function s at that point.

If we let f(t) be the function s, then the derivative of f(t) at t=1 would give us the slope of the tangent line to s at that point. This can be written mathematically as:

s'(1) = lim(h->0) [s(1+h) - s(1)]/h

Here, s'(1) represents the derivative of s at t=1, and h represents a small change in t. By taking the limit as h approaches 0, we can find the instantaneous rate of change of s at t=1, which is the slope of the tangent line to s at that point.

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The solution to the statement "add the quotient of 0.4 and 0.7 to the quotient of 1.4 and 0.4" is 4.07

From the question, we have the following parameters that can be used in our computation:

add the quotient of 0.4 and 0.7 to the quotient of 1.4 and 0.4

Using the above as a guide, we have the following:

0.4/0.7 + 1.4/0.4

Simplify the fractions

4/7 + 7/2

Evaluate the sum

4.07 (approximated)

Hence, the solution is 4.07

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Answer: .1036

Step-by-step explanation:

Answer:

Let X ~ B(0.6, 5)

Prob of success = 0.6 Prob of failure = 0.4

Amount of samples = 5

P(X [tex]\geq[/tex] 3) = P(3) + P(4) + P(5)

              = (5C3 x (0.6)^3 x (0.4)^2) + (5C4 x (0.6)^4 x (0.4)) + (0.6)^5

              = 0.6826 (cor to 4 dp)

P(X [tex]\leq[/tex] 4) = P(0) + P(1) + P(2) + P(3) + P(4)

              = 1 - P(5)

              = 1 - (0.6)^5

              = 0.9222 (cor to 4 dp)

P(X = 2) = P(2) = (5C2 x (0.6)^2 x (0.4)^3) = 0.2304

Mean = n x p = 5 x 0.6 = 3

Standard deviation = n x p x ( 1 - p) = 5 x 0.6 x (1 - 0.6) = 5 x 0.6 x 0.4 = 1.2

Overdraft protection and lines of credit are two financial tools that can be used to cover unexpected expenses or short-term financing needs.  Some of their costs and benefits are shown below.

Overdraft protection is a service offered by banks to protect their customers from overdraft fees. If a customer tries to withdraw more money than is available in their account, the bank will cover the transaction and charge a fee.

The cost of overdraft protection is usually a fee charged by the bank for each overdraft transaction, which can add up over time. The benefit of overdraft protection is that it can help customers avoid overdraft fees and the embarrassment of declined transactions.

Lines of credit are a type of loan that allows borrowers to access funds up to a certain limit. They are typically unsecured, meaning that they do not require collateral, and are often used for short-term financing needs such as home improvements, car repairs, or unexpected expenses.

The cost of a line of credit is usually an interest rate on the amount borrowed. The benefit of a line of credit is that it provides access to funds when they are needed, without having to apply for a loan each time.

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Answer:

the answer is 3√3

Step-by-step explanation:

The rate of the current is 10 mi/hr and the total distance traveled is 100 mi.

Let S be the speed of the current, R be the speed of the boat in still water, t1 be the time taken to row upstream and t2 be the time taken to row downstream. The total distance traveled is given by the formula [tex]d = R(t1 + t2)[/tex]. In this case, [tex]d = 5(15 + 10) = 100 mi[/tex].

To calculate the rate of the current, we can use the formula[tex]d = (R + S)t1 = (R - S)t2[/tex]. In this case, 100[tex]= (5 + S)15 = (5 - S)10[/tex], which can be simplified to [tex]S = (100 - 50)/5 = 10 mi/hr[/tex].

Therefore, the rate of the current is 10 mi/hr and the total distance traveled is 100 mi.

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The coordinates points and quadrants on the grid shown above are listed below.

In Mathematics, a quadrant simply refers to the area that is occupied by the values on the x-coordinate (x-axis) and y-coordinate (y-axis) of a cartesian coordinate.

Based on the cartesian coordinate (grid) above, the coordinates points and quadrants should be identified as follows;

In conclusion, you should take note of the points on the x-axis and y-axis of the cartesian coordinate (grid).

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If probability distribution for a stock probability outcome is 5, 6 ,5 ,18, 1.

a) The expected return is 1.56

b) The standard deviation is 5.1715  

c) The coefficient of variation is 331.25%.

To calculate the expected return, we multiply each possible outcome by its probability and then sum the results. For example, the expected return from a 5% return is calculated as 0.5 x 5%, or 0.025. We do this for each possible outcome and then sum the results to get the expected return for the investment.

In this case, the expected return is 1.56, which means that over the long run, we can expect to earn an average return of 1.56% on this investment.

The standard deviation is a measure of how much the possible outcomes of an investment vary from the expected return. A higher standard deviation means that the possible returns are more spread out, while a lower standard deviation means that the possible returns are more tightly clustered around the expected return.

To calculate the standard deviation, we first need to calculate the variance, which is the average of the squared deviations from the expected return.

To calculate the variance, we first calculate the deviation of each possible outcome from the expected return. For example, the deviation of a 5% return from the expected return of 1.56% is 5% - 1.56% = 3.44%.

We then square each deviation and multiply it by the probability of that outcome. We do this for each possible outcome, and then sum the results to get the variance. In this case, the variance is 26.7424, which means that the possible returns are quite spread out.

The coefficient of variation is a measure of the risk per unit of return. It is calculated by dividing the standard deviation by the expected return and then multiplying by 100% to get a percentage. In this case, the coefficient of variation is 331.25%, which means that the investment is quite risky relative to its expected return.

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Answer:

1/ $12 for each ticket

2/ $84 for 7 tickets

Step-by-step explanation:

We know

Layla paid $48 for 4 movie tickets

How much does each ticket cost?

48 / 4 = $12 for each ticket

So, each ticket cost $12

How much would it cost her to purchase 7 tickets?

12 x 7 = $84

So, it cost her $84 to purchase 7 tickets.

The equation shown is used to find the force of gravity, F = G(m₁m₂)/R², between two objects.

All physical things with mass are drawn to the gravitational force, which can be thought of as an attractive force. The strongest known natural force is actually this one.

The attracting force F has a magnitude equal to G. (the gravitational constant, a number the size of which depends on the system of units used and which is a universal constant) multiplied by the product of the masses (m₁ and m₂) and divided by the square of the distance R:

F = G(m₁m₂)/R².

Newton’s Law would imply an infinite gravitational force when two very small objects touch, that is, when their centers of mass are so close that "r" is effectively zero.

In reality, this would only take place at the subatomic scale, but at the time of Newton, they were unaware of subatomic particles, the Quantum Theory, or Einstein's reinterpretation of gravity, which would have allowed them to rule out infinite or extremely strong gravitational forces. The least powerful force is gravity.

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The representations of the inequality is  an open circle is at 1 and a bold line starts at 1 and is pointing to the right.

An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value e.g. 5 < 6, x ≥ 2, etc.

Since our answer is x > 1.  An open circle will be at 1 and a bold line starts at 1 and is pointing to the right (>). Check the attached image.

Note: You only shade up if you have ≤ (less than or equal) or ≥ (greater than or equal).

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The characteristics of each structural level in the corresponding boxes are hydrogen bonds, amino acids, and disulfide bonds

Protein structure is a key concept in biology, and it refers to the organization of amino acid sequences into three-dimensional structures. The different levels of protein structure are primary, secondary, tertiary, and quaternary.

On line 1, we have the primary structure, which refers to the linear sequence of amino acids in a protein. It is determined by the DNA sequence of the gene that encodes the protein. Each amino acid is joined to the next one by a peptide bond, forming a polypeptide chain.

On line 2, we have the secondary structure, which refers to the local folding of the polypeptide chain. The two structures depicted on the lines under line 2 are the alpha-helix and the beta-sheet. The alpha-helix is a coiled structure in which the polypeptide chain is twisted into a spiral shape, held together by hydrogen bonds. The beta-sheet is a flat structure in which the polypeptide chain is folded into a zigzag pattern, also held together by hydrogen bonds.

On line 3, we have the tertiary structure, which refers to the overall three-dimensional shape of a single polypeptide chain. It is determined by the interactions between amino acid side chains, such as hydrophobic interactions, hydrogen bonds, disulfide bonds, and van der Waals forces. The tertiary structure can be globular or fibrous, depending on the protein's function.

On line 4, we have the quaternary structure, which refers to the arrangement of multiple polypeptide chains in a protein complex. Some proteins consist of a single polypeptide chain, while others consist of two or more chains that interact with each other to form a functional unit. The quaternary structure is also determined by the same types of interactions as the tertiary structure.

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(a) The probability that the top card is an ace or a king is [tex]$\frac{2}{13}[/tex]

(b) The probability that the top card is spades and the second card is clubs is [tex]$\frac{1}{2652}[/tex]

(c) The probability that the top card is spades and the second card is an ace is [tex]$ \frac{1}{663}[/tex]

(d) The probability that the top 3 cards are all spades is [tex]$\frac{1}{132600}[/tex]

(e) The probability that the top 4 cards include 3 different ranks, with one rank appears twice is [tex]$\frac{2}{925}[/tex]

As per the data given:

A standard deck of 52 cards has 13 ranks (ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king) and 4 suits (spades, hearts, diamonds, and clubs), such that there is exactly one card for any given rank and suit.

a) The probability that the top card is an ace or a king:

The probability that the top card is an ace [tex]$\frac{4}{52} = \frac{1}{13}[/tex]

The probability that the top card is an king [tex]$\frac{4}{52}=\frac{1}{13}[/tex]

The probability that the top card is an ace or a king is [tex]$\frac{1}{13} +\frac{1}{13} =\frac{2}{13}[/tex].

b) The probability that the top card is spades is [tex]$\frac{1}{52}[/tex]

Already a card is drawn then the probability that the second card is clubs is [tex]$\frac{1}{51}[/tex]

The probability that the top card is spades and the second card is clubs is [tex]$\frac{1}{52}\times\frac{1}{51} = \frac{1}{2652}[/tex]

c) The probability that the top card is spades is [tex]$\frac{1}{52}[/tex]

Already a card s drawn then the probability that the second card is an ace is [tex]$\frac{4}{51}[/tex]

The probability that the top card is spades and the second card is an ace  is [tex]$\frac{1}{52}\times\frac{4}{51} = \frac{4}{2652} = \frac{1}{663}[/tex]

d) The probability that the top 3 cards are all spades is [tex]$\frac{1}{52}\times\frac{1}{51}\times\frac{1}{50} = \frac{1}{132600}[/tex]

e) There are C(52, 4) ways to choose 4 cards from the deck, and the 4 ways to choose the rank that appears twice.

So, the total number of ways to choose 4 cards with 3 different ranks and one rank appearing twice is 4 C(52, 4) = 4 × 270725.

The number of ways to choose the 4 cards such that they include 3 different ranks, with one rank appearing twice is 4  C(13, 2)  C(4, 2) = 672.

Hence, the probability is [tex]$\frac{672}{270725} =\frac{2}{925}[/tex]

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A standard deck of 52 cards has 13 ranks (ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king) and 4 suits (spades, hearts, diamonds, and clubs), such that there is exactly one card for any given rank and suit. The deck is randomly arranged. What is the probability that

(a) the top card is an ace or a king.

(b) the top card is spades and the second card is clubs.

(c) the top card is spades and the second card is an ace.

(d) the top 3 cards are all spades.

(e) the top 4 cards include 3 different ranks, with one rank appears twice (for example, an ace of hearts, a 3 of clubs, a 3 of hearts, and a 7 of spades).

The problem of scheduling exams for the high school students can be solved by using graph theory. We can represent the overlap of students in the form of a graph where each teacher is a node and the edges represent the students who belong to both the teachers classes.

To ensure that no student has to take more than one exam each day, we need to find a coloring of the graph such that no two adjacent nodes have the same color. This is equivalent to scheduling exams such that no two exams on the same day have any common students.

Using a greedy approach, we may overcome this issue by starting with any node and assigning it a color.. We then recursively color the neighbors of the node with a different color and so on. This algorithm will always produce a valid coloring since we are guaranteed to find a valid color for every node, given that we have not run out of colors.

In this case, we have seven teachers so we need at least seven colors. However we can find a valid coloring with fewer colors, depending on the structure of the graph. This problem can also be extended to more general situations, where we have more than one exam per day or where we have more complex constraints on the scheduling of exams.

The answer is general as no additional data is given.

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The linear equation for the vehicle on each given time is:

Please refer to the attached picture for the complete question and the graph.

From the case, we know take several points based on the given time:

We can find the linear equation for each given time by finding the slope of the line and the constant of c. Remember that the linear equation formula is:

y = mx + c

where:

m = slope of line

c = constanta

We take the first 2 points:

(0, 24)

(3, 12)

slope (m) = y₂ - y₁

                  x₂ - x₁

m = (12 - 24) / (3 - 0)

m = (-12)/3 = - 4

We take the value of m into the linear equation and test it on one of the point we have:

(0, 24)

y = mx + c

24 = (-4)(0) + c

24 = - 4 + c

c = 28

Linear equation: y = -4x + 28

Next, we will take another pair of points:

(3, 12)

(6, 12)

slope (m) = (12 - 12) / (6 - 3)

m = 0

This shows that the linear equation for this part of graph is:

y = 12 --> because no matter changes on x, the value of y remains.

We take another pair of points:

(6, 12)

(9, 0)

slope (m) = (0 - 12) / (9 - 6)

m = (-12)/3 = -4

We take the value of m into the linear equation and test it on one of the point we have:

(9, 0)

y = -4x + c

0 = -4 (9) + c

c = 36

The linear equation for this part of graph is y = -4x + 36

The other part of graph's linear equation is y = 0 because the car has come into stop.

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