Functions Solutions

• The    vertical line test, VLT,    is used on a coordinate plane to determine if a graph is a function.

• When a graph passes the VLT, the line only touches the graph at    ONE point   .

• When a function is present, the equation can be written in    function notation f (x)   .

• If function notation is used, you already know that the equation    represents    a function.

Example 1

Determine if the graphs are functions.

Example 2

Write the equations with f in respect to x.