If xy not equal 0 and x^2*y^2 -xy =56, which of the following could be y in terms of x?
I. 1/2x
II. -8/x
III. 7/x Select.
A) II	B) I &II	C) IV	D) III	E) II and III
x2y2 - xy = 56   x2y2-xy-56 = 0   (xy-7)(xy+8)=0   xy = 7 or xy=-8   y = 7/x or y = -8/x   II and III only   II and III
<result>E</result>
If xy not equal 0 and x^2*y^2 -xy =56, which of the following could be y in terms of x?
I. 1/2x
II. -8/x
III. 7/x