inverse functions

Question

for the function f(x)=√x-6+1, find the inverse function

Answer 1

Assuming

 

f(x) = √(x - 6) +1

x = √(f^-1(x) - 6) + 1

x - 1 = √f^-1(x) - 6)

(x - 1)² = f^-1(x) - 6

(x - 1)² + 6 = f^-1(x)