Question

Which of the following is the function f(x) if f-1(y)=y/8+3? (picture attached)

Answer 1

Hello,
Answer D

`F^-1(y)= (y)/(8) +3\\ \Rightarrow\ F^-1(x)= (x)/(8) +3\\ \Rightarrow\ y= (x)/(8) +3\\ \Rightarrow\ x= (y)/(8) +3\\ \Rightarrow\ y= 8*(x-3)\\ \Rightarrow\ F(x)= 8*(x-3)\\`