SOLUTION: Please help. Given the function f(x)=5x+2, find a formula for the inverse function.

Algebra ->  Functions -> SOLUTION: Please help. Given the function f(x)=5x+2, find a formula for the inverse function.      Log On


   

Question 91012: Please help.
Given the function f(x)=5x+2, find a formula for the inverse function.
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = 5x + 2
y = 5x + 2
x = 5y + 2
x - 2 = 5y
0.2x - 0.4 = y
0.2x - 0.4 = f^(-1)(x)
graph%28300%2C300%2C-2%2C2%2C-2%2C2%2Cx%2C5x+%2B+2%2C0.2x+-+0.4%29