# Find the Inverse y = log of x-9

Interchange the variables.
Solve for .
Rewrite the equation as .
Rewrite in exponential form using the definition of a logarithm. If and are positive real numbers and , then is equivalent to .
Solve for
Rewrite the equation as .
Add to both sides of the equation.
Solve for and replace with .
Replace the with to show the final answer.
Set up the composite result function.
Evaluate by substituting in the value of into .
Exponentiation and log are inverse functions.
Combine the opposite terms in .
Add and .
Add and .
Since , is the inverse of .
Find the Inverse y = log of x-9

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