Question

What is the inverse of the function f(x) = 2x + 1?

Answer 1

Answer:

1 + 2x = f(x) i believe

Step-by-step explanation:

Answer 2

Answer:

$f^{-1}$(x) = $\frac{x-1}{2}$

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 2x + 1 ( subtract 1 from both sides )

y - 1 = 2x ( divide both sides by 2 )

$\frac{y-1}{2}$ = x

Change y back into terms of x

$f^{-1}$(x) = $\frac{x-1}{2}$