Your answer would be 2x^2y(x^2y^2-6xy-4)
Direct variation is of the form: y=kx (inverse variation is of the form y=k/x)
Assuming that k is positive :)
y increases as x increases and y decreases as x decreases. There is a direct ratio that is described by k. k=y/x.
8/9 x = 32
x = (32 * 9)/8 = 4 * 9 = 36
x = 36