A line that includes the points (-4, n) and (-5, -2) has a slope of 9. What is the value of n?

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(1) Answers

laamegga12

The equation for slope is
m = y2 - y1
---------
x2 - x1
so plug in the values given
9 = -2 -n
----------
-5 - (-4)
9 = -2 - n / -1
9 * -1 = -2 - n
-9 = -2 - n
-7 = -n
7 = n
n = 7