Answer:Since g(f(x))=x g ( f ( x ) ) = x , f−1(x)=2x+6 f - 1 ( x ) = 2 x + 6 is the inverse of f(x)=12x−3 f ( x ) = 1 2 x - 3 .
Step-by-step explanation:
The function: f(x) 2x+3
Put "y" for "f(x)": y 2x+3
Subtract 3 from both sides: y-3 2x
Divide both sides by 2: (y-3)/2 x
Swap sides: x (y-3)/2
