SOLUTION: How do you do y=f^-1(x)?
Algebra.Com
Question 198221: How do you do y=f^-1(x)?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Start with f(x) equals some expression involving x. Then replace f(x) with y. Next, solve the equation for x in terms of y. Finally, swap x for y and y for x. The only thing is that you have to make sure that the inverse is still a function.
Example:
 = 2x - 6)
Now swap the variables:
so
=\frac{x+6}{2})
John
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