If xy ≠ 0 and x^2y^2 − 2xy = 24, which of the following could be y in terms of x?
I. 6/x
II. -4/x
III. 1/x  Choose the most appropriate option:  A) I only  B) II only  C) I and II only  D) I and III  E) II and III
(x^2)(y^2) –2xy - 24 = 0   (xy – 6)(xy + 4) = 0   xy – 6 = 0 or xy + 4 = 0   xy = 6 or xy = -4   Since we need y in terms of x, we can isolate y in both of our equations.   y = 6/x or y = -4/x   Answer: I and II only
<result>C</result>
If xy ≠ 0 and x^2y^2 − 2xy = 24, which of the following could be y in terms of x?
I. 6/x
II. -4/x
III. 1/x