x varies inversely as square of y. Given that y=3 for x=1. The value of x for y = 2 will be equal to:
Options:
A) 3	B) 6	C) 1/9	D) 1/3	E) 9/4
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 /2^2 = 9/4   Answer : 9/4
<result>E</result>
x varies inversely as square of y. Given that y=3 for x=1. The value of x for y = 2 will be equal to: