Respuesta :

kamraaa
y = mx+c

7 = 5m + c
-5 = 9m + c
Substitute the 2 equations:
12 = -4m
m = -3

Use one of the point:
7 = -3(5) + c
7 = -15 + c
c = 22

Therefore the equation is:
y = -3x + 22