2. Domain of the function = Range of the inverse Range of the function = Domain of the inverse Example:

3. The reflection of a point (a,b) about the x-axis is (a,-b) The reflection of a point (a,b) about the y-axis is (-a,b) Original and inverse are symmetric over the line y=x

4. Write original function. Replace f(x) by y. Interchange x and y. Multiply each side by 5. Isolate the y-term Solve for y. Replace y by f -1 ( x ).

5. Function Not a function

6. One-to-one function Not a one-to-one function