Question

Is this a function?

Answer 1

no this is not a function

Explanation:

it might be a funtion and if it is im sorry i got it wrong

Answer 2

Yes, this is a function.

Explanation:

To have a function, each value used for the x-coordinates can be used only once.

Let's look at all the x-coordinates: -5, -3, -1, 1, 3, 5.

All x-coordinates are different. No value in the x-coordinates is used more than once.

Answer: Yes, this is a function.