Question

If y varies inversely with x and y=9 when x=2.5, how do you find y when x=-0.6?

Answer 1

Inverse variation answers to `x xxy=C`, where `C` is the constant of variation.

Explanation:

`C=x xxy=2.5xx9=22.5` (given case)
`->y=22.5/x`

Or new case:
`y=22.5/(-0.6)=-37.5`
graph{22.5/x [-50.2, 42.27, -23.85, 22.4]}