Question

Which graph does not represent a function​

Answer 1

3

Explanation:

All graphs pass the vertical test except for 3.

3 is not a function because 1 single value of x is matched to many values of y.

Answer 2

Graph 3

Explanation:

A graph can only be a function if one x has only one y. We can simply use the Vertical line test and know that graph 3 does not represent a function.