Question

Is the following relation a function?

Answer 1

Hello!

If x represents the domain while y represents the range, this is not a function. Each input can have only one output. Outputs can have multiple inputs, but not the other way around.

As you can see, -1 goes to both 2 and -1, so it is not a function.

I hope this helps!

Answer 2

No it is not a function