Question

How do you find the inverse of `y=3x-4`?

Answer 1

`y = 1/3 * (x +4)`

Explanation:

`F(x,y) = 0 Rightarrow y = g(x)`

`F(y,x) = 0 Rightarrow y = g^-1(x)`

i.e., exchange x and y.

`0 = 3x - y - 4`

`0 = 3y - x - 4 Rightarrow y = (x + 4)/3`