Question

Is this a funcion? Explain why.

X: -2, 0, 1, -2
Y:4, 5, 4, 5

Answer 1

No it isn’t a function because of the domain

Answer 2

No

Explanation:

it isn't a Function because the Domain (X coordinate) repeats a number.

Take this note:

Domain (x) repeats: Not a function

Domain(x) doesn't repeat: Function

Hope this helps ;)