x varies inversely as square of y. Given that y=3 for x=1. The value of x for y = 7 will be equal to:  Choose the correct choice from the following answers:	A) 3	B) 6	C) 1 / 9	D) 1 / 3	E) 9 / 49

Rationale: explanation : solution : given x = k / y ^ 2 , where k is constant . now , y = 3 and x = 1 gives k = 9 . . ' . x = 9 / y ^ 2 = > x = 9 / 7 ^ 2 = 9 / 49 answer : e
Answer: E