In Try This 3 you may have found it is possible to determine the equation of an inverse given the equation of a function. One method of doing this procedure is to replace f(x) with y, switch x and y, and solve for y. Then f(x) is replaced with y to avoid equations that contain the variable f(x), which can be confusing. The following example shows how to do this procedure. Take note of when it is appropriate to use function notation to represent an inverse and when it is not appropriate.