Question

What is the inverse function of `f(x)=1/7x-9`?

Answer 1

`(9+y) / 7`

Explanation:

`y = 1/7x - 9`

// add 9 over
`9 + y = 1/7x`

// divide by 7
`(9+y) / 7 = x`

The inverse of x is equal to:
`(9+y) / 7`