Help fast pls
Which relation is a function?

It's the bottom left graph.

Step-by-step explanation:

To tell if a graph is a function you do the vertical line test. If the line passes through more than 1 point, its not a function.

You can see it in the pic below that all the other graphs, a vertical line passes through more than 1 point. I highlighted those points so you could see. But the bottom left graph the vertical lines only pass through one point each time. So that is a function.

step-by-step explanation:

jbjuiuhuhuuy