Question

How do you find the inverse of `f(x)=sqrt(3x)` and is it a function?

Answer 1

`x^2/3` and yes

Explanation:

Replace `x` by `f(x)` and the other way around and solve for `x`.
`sqrt(3*f(x))=x`
`3*f(x)=x^2`
`f(x)=x^2/3`

Since each value for `x` has one unique value for `y`, and each value for `x` has a `y` value, it is a function.