Help please in y= mx + b

Answer:
˙
Step-by-step explanation:
y=-5x+8
Step-by-step explanation:
Find coordinates of two points
(1,3) (2,-2)
slope =( y-y' ) / (x - x') = (3 - -2) / 1 - 2 = 5 / -1 = -5
y = mx + b (y intercept) By the graph; The y intercept is (0,8)
∴ y = -5x + 8