Question

If y varies inversely as x, and y = 12 when x = 6, what is K, the variation constant? A. 2 B. 72 C. 144 D. 1/3

Answer 1

In this question, it is given that y varies inversely as x . So the equation is

`y = (k)/(x)`

And here k is the proportionality constant .

And when x=6, y=12

`12 = (k)/(6) \\ k =72`

So the values of the proportionality constant k is 72 and the correct option is B.