Question

I need help knowing if this is a function or not

Answer 1

yes

Explanation:

Use the vertical line test to determine whether or not a graph represents a function. If a vertical line is moved across the graph and, at any time, touches the graph at only one point, then the graph is a function. If the vertical line touches the graph at more than one point, then the graph is not a function.

So if you plug in the following values for x & y, you'll get a curve crossing the Y axis at 0,0

-1,-1

-2,-2

-3,-3

0,0

1,1

2,2

3,3