Question

Let f(x) = 2x -6. Solve f-1(x) when x = 2.
Alright so I have: f(x) = 2x - 6 => f-1(x) = x + 6/2
f-1(2) = (2) + 6/2
f-1(2) = 8/2
f-1(2) = 4
Is this the correct answer? I'm not very good at inverse functions.

Answer 1

its (x+6)/2
isn't it ?

Answer 2

and f^{-1}(2) = 4 is correct :)

Answer 3

Thank you!

Answer 4

welcome ^_^