Respuesta :

Answer:

m = -1/3

Step-by-step explanation:

First find the slope using

m= (y2-y1)/(x2-x1)

   = (9 - -3)/(4-0)

   = (9+3)/(4-0)

   = 12/4

    = 3

We want the slope that is perpendicular  Perpendicular slopes multiply to -1

m * 3 = -1

m * 3 /3 = -1/3

m = -1/3

Answer:

-1/3

Step-by-step explanation:

When slopes are perpendicular it means it's the opposite of the slope

The opposite of the slope of line AB is -1/3