x varies inversely as square of y. Given that y = 2 for x = 1. The value of x for y = 6 will be equal to:  Choose the correct choice from the following options:
A) 1 / 2  B) 1 / 3  C) 1 / 5  D) 1 / 9  E) 1 / 3

Rationale: "given x = k / y 2 , where k is a constant . now , y = 2 and x = 1 gives k = 4 . x = 4 / y 2 = > x = 4 / 62 , when y = 6 = > x = 4 / 36 = 1 / 9 . answer : d"
Answer: D