Determine whether an equation determines y as a functions of x

Is y a Function of x?

Ex 1: Use the Vertical Line Test to Determine if a Graph Represents a Function

Using the vertical line test to determine if a graph is a function or not

Identifying Functions

Ex 2: Use the Vertical Line Test to Determine if a Graph Represents a Function

Vertical Line Test - Is something a function?

Determining if an equation defines y as a function of x