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maks197457 [2]
3 years ago
7

Write the equation of line AB in slope-intercept form, given the points A(0,5) and B(-5,-10) . In your final answer, include all

of your calculations.
Mathematics
1 answer:
Evgesh-ka [11]3 years ago
7 0

Answer:

y = 3x + 5        

Step-by-step explanation:

1) First, find the slope between the pair of points. Use the slope formula m = \frac{y_2-y_1}{x_2-x_1}. Substitute the x and y values of points A and B into the formula and simplify:

m = \frac{(-10)-(5)}{(-5)-(0)} \\m  = \frac{-10-5}{-5-0} \\m = \frac{-15}{-5} \\m = 3

So, the slope is 3.

2) Now, identify the y-intercept of the line, or the point at which the line intersects the y-axis. All points on the y-axis have an x-value of 0. We're told that (0,5) is a point the line intersects, and since it has an x-value of 0, that must be the y-intercept.  

3) Using slope-intercept format, represented by the equation y = mx + b, write the equation of the line. Remember that the number in place of m, or the coefficient of the x-term, is the slope. So, substitute 3 for m. Also, remember that b represents the y-intercept of a line, so substitute 5 in its place, too. This gives the following answer:

y = 3x + 5

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Question 6 (5 points)
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Answer:

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Step-by-step explanation:

For any two points on coordinate plane (x1,y1) and ( x2,y2)

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Given

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therefor by using formula for midpoint coordinate given above we have

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Hence point

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=> -10 + 8 = y2

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