Question

If y varies directly as the x^2 and y =200 when x =5 ,What is the value of y when x =-3

Answer 1

x^2 --> 5^2 = 25
200 / 25 = 8

so, you can assume that:

x^2 --> (-3)^2 = 9
9 * 8 = y
72 = y

this is how I would solve it anyway. Hope it helped.

Answer 2

The answer you want would be -120

b/c 200/5 is 40 so -3*40 is -120