Inverse and Composition of Functions

The inverse of a function is the set of all ordered pairs___________or_________.

• (y,x) or (f(x), x)

• (x,y) or (x, f(x))

Find the inverse of the relation.

The _____________is used to determine if a function its invertible.

• Vertical line test

• Horizontal line test

Answer explanation

If the horizontal line can pass through more than one point than the function is not invertible.

Use the horizontal line test to determine which function is invertible.

• 
• 
• 

• 5

• 2

• -2

• 30

• 242

• 2

• 92