Question

Find the inverse of the function.

Answer 1

1/2 y +6 = x
y=2 (x-6)
= 2x-12
f^-1 (x)= 2x-12

Answer 2

Hello : 
f(x) = 1/2 x +6
find : x
1/2x = f(x) -6
 x = 2f(x) -12
the inverse  is  : f^-1 (x) =  2x-12