SOLUTION: I need help finding the inverse of f(x) i just dont really understand how to do it. For example f(x)=4x+7 i think after that you switch the x and y and im lost after that

Algebra ->  Rational-functions -> SOLUTION: I need help finding the inverse of f(x) i just dont really understand how to do it. For example f(x)=4x+7 i think after that you switch the x and y and im lost after that      Log On


   



Question 696332: I need help finding the inverse of f(x) i just dont really understand how to do it.
For example
f(x)=4x+7
i think after that you switch the x and y and im lost after that

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
I need help finding the inverse of f(x) i just dont really understand how to do it.
For example
f(x)=4x+7
y = 4x + 7
--> x = 4y + 7
Then solve for y
4y = x - 7
y = (x-7)/4 is the inverse.