Question

How do you find `f^-1(x)` given `f(x)=-3x+2`?

Answer 1

`y= (2-x)/3`

Explanation:

Let f(x) be denoted by y,thus y= -3x+2

Now interchange x and y,it becomes x= -3y+2

Solve for y, `y= (2-x)/3` This is `f^(-1) x`