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What is the equation of the line passing through the points (9,3) and (0,-4) in slope-intercept form (y = mx + b)?

A) y = 7x - 4
B) y = -7x + 4
C) y = 7x - 31
D) y = -7x - 31

1 Answer

4 votes

Final answer:

The equation of the line passing through the points (9,3) and (0,-4) in slope-intercept form (y = mx + b) is y = -7/9x + 10.

Step-by-step explanation:

The equation of the line passing through the points (9,3) and (0,-4) in slope-intercept form (y = mx + b) can be found using the formula:

y = mx + b

where m is the slope of the line, and b is the y-intercept.

First, calculate the slope (m) using the formula:

m = (y2 - y1) / (x2 - x1)

Substitute the coordinates of the two points into the formula:

m = (-4 - 3) / (0 - 9) = -7/9

Next, substitute one of the points and the slope into the formula to calculate the y-intercept (b):

y = mx + b

3 = (-7/9)(9) + b

b = 3 + 7

b = 10

Therefore, the equation of the line in slope-intercept form is y = -7/9x + 10.

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User Gakhov
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