SOLUTION: Find the inverse of the function, f^-1(x), if it exists. f(x)= -2 - 5x / 4 + 5x, assume x can not equal -0.8 How do you do this?

Question 932707: Find the inverse of the function, f^-1(x), if it exists. f(x)= -2 - 5x / 4 + 5x, assume x can not equal -0.8
How do you do this?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The idea is to replace f(x) with y, swap x and y, and then solve for y like so...

So the inverse is

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