Respuesta :

amna04352

Answer:

y = (4/3)x - 7

Step-by-step explanation:

For perpendicular lines,

m1×m2 = -1, where m1 and m2 are their gradients

m1 = -3/4

-3/4 × m2 = -1

m2 = 4/3

y = (4/3)x + c

When x = 12, y = 9

9 = (4/3)(12) + c

9 = 16 + c

c = -7

y = (4/3)x - 7