Graph the relation in the table. then use the vertical-line test. is the relation a function? -1 & 3, 1 & -1, 2 & 2, 1 & 3

this relation is not a function.

Step-by-step explanation:

Given relation is

(-1, 3)   (1,-1)   (2,2)  and (1,3)

Now plot all the ordered pairs on the graph

Then we draw vertical lines through these points

If any vertical line crosses two points then this relation is not a function

The graph is attached below

We can see that the red vertical line crosses both points (1,-1) and (1,3)

It does not passes vertical line test.So this relation is not a function.

were is the equation