Khan Academy: Pre Calculus: Introduction to Function Inverses

An instructional video explaining the concept of function inverses. A linear function is given and a diagram is drawn to show the mapping of some elements of the domain to the corresponding elements in the range. The inverse of the function is found algebraically. Then both the function and its inverse are graphed on the same coordinate axis. The student can see that the inverse is a reflection of the original function over the line y=x. [9:05]