Question

If y varies inversely as x and y=2 when x=6, how do you find y when x=36?

Answer 1

If y varies inversely as x then there is constant k such as

`y=k/x`

Hence for y=2 we have x=6 then

`2=k/6=>k=12`

For x=36 we have `y=k/36=12/36=1/3`