Question

find the value of r so that the line that passes through (5, r) and (2, -3) has a slope of 4/3.

Answer 1

(y1 - y2) / (x1 - x2) = 4/3
(r - (-3)) / (5 - 2) = 4/3
(r + 3) / 3 = 4/3
r + 3 = (4/3) * 3
r + 3 = 4
r = 1