Question

Use an equation to find the value of k so that the line passing through (−4,k) and (6,−7) has a slope of −15.

Answer 1

k = 143

Explanation:

Using the slope formula

(k- -7)/(-4-6) =-15

(k+7)/(-10) = -15

k+7 =-15*-10

k+7 = 150

Subtract 7

k+7-7 = 150-7

k = 143