What is r (2,r),(-9,-3),m=-7/4

Answer 1

Slope or m = rise/run or y2 - y1/x2 - x1

What do you know? You usually get the coordinates for 2 points, and then you solve for m. But here you know that m = -7/4

y2 = r

y1 = -3

x2 = 2

x1 = -9

You can substitute and solve for r....