Question

Determine whether the graph is the graph of a function.

Answer 1

not is not if you draw vertical lines across it will touch it twice

Answer 2

No

Explanation:

In math, you could only say a graphic represents an equation if the lines cross each point only obe time.

In this case, it is not.

You can appreciate that many of the points are double, like -5 or -10. You can demonstrate by drawing a vertical line that starts on one side of the graphic to the other and sees that it touch it twice.