Question

Which is the quadratic variation equation for the relationship?

y varies directly with x^2 and y = 72 when x = 6.


A.
y = 2x^2

B.
y = 4x^2

C.
y = 12x

D.
y = x^2 + 25

Answer 1

Do you know what the question is asking?

Answer 2

72= 36
= 72/36
=2
so you are left with \[y=2x^2\]