Question

If f(x) = x +2, all over 2, then what is f^–1(x)

Answer 1

Assuming this an inverse function, the first step you would take is switching x and ys, then solving for y again.

Answer 2

First write \[y = \dfrac{x+2}{2}\]
Now swap the x and y.
\[x = \dfrac{y+2}{2}\]
Now solve for y

Answer 3

The reason we "swap the x and y" is because the inverse of a function is a reflection about the line y = x. ( so wherever we see y, we switch it with x and vice versa.)

Answer 4

so you get 2y = x?

Answer 5

2y-2 = x*