Question

A line passes through the points (−4, 7) and (5, −8). What is the slope of the line?

Answer 1

-5/3

Explanation:

m=(y2-y1)/(x2-x1) ==> (x1, y1), (x2, y2) are the coordinates and

m is the slope

(x1, y1), (x2, y2) ==> (x1=-4, y1=7), (x2=5, y2=-8)

m=(-8-7)/(5-(-4)) ==> plug in known values

m=(-15)/(5+4) ==> simplify

m=-15/9

m=-5/3