Inverse Relations and Functions

Key Concepts:

Find inverse functions graphically.

Find inverse functions algebraically.

Use Property of inverse function to check whether two functions are inverse algebraically

Real World Problem:

In real life there are situations where you have to use inverse functions. When you have to use a function to solve currencies, you have to use the inverse to convert it back. The function for US Dollars to Pesos is y = 2402.9x.You can use the inverse to revert back.

• First, swap x and y. (x = 2402.9y)
• Then you have to solve for y, (x/2402.9)
• That is your inverse function