x varies inversely as square of y. Given that y=3 for x=1. The value of x for y = 9 will be equal to:  Choose the correct choice from the following answers.
A) 3  B) 6  C) 1/9  D) 1/3  E) 9
Explanation :   Solution: Given x = k/y^2, where k is constant. Now, y=3 and x =1 gives k = 9.   .'. x = 9/y^2   =&gt; x =9 /9^2 = 1/9   Answer : 1/9
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x varies inversely as square of y. Given that y=3 for x=1. The value of x for y = 9 will be equal to: