Question

if y varies directly as the x squared and y=200 when x=5 what is the value of y when x=-3?
a. -72
b. 120
c. 72
d. -120

Answer 1

If I read this correctly, y = 200 and x = 5 has a difference of 40. So all we have to do now is x = -3 times 40.

So the final answer is D, -120.