Question

A direct variation function contains the points (-9, -3) and (-12, 4). Which equation represents the function"
y=-3x
0 y=-
Oy
y = 3x

Answer 1

4-(-3)/-12-(-9) = 7/-3



Y= -7/3x
-3= -7/3(-9) +b
-3= 21 + b
B= 18


Y= -7/3x + 18
Hope this helps!