Question

If y varies inversely as x, and y=14 when x=7, how do you find y when x=10?

Answer 1

`98/10 = 9.8`

Explanation:

`y propto 1/x => y = C * 1/x = f(x)`

`14 = C* 1/7 => C = 14 * 7 = 98`

`f(10) = C * 1/10`