Question

Onto

Answer 1

Answer:

No

Step-by-step explanation:

To obtain the inverse function

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

y = 3x + 1 ( subtract 1 from both sides )

y - 1 = 3x ( divide both sides by 3 )

$\frac{y-1}{3}$ = x

Change y back into terms of x, thus

$f^{-1}$(x) = $\frac{x-1}{3}$