Question

Are this functions
i don’t know so i asked

Answer 1

1. Yes, it's a function.

2. No, it's not a function.

3. No, it's not a function.

Explanation:

A function is a relation in which each element of the domain (input) corresponds with exactly one element of the range (output).

Hope this helps.

Answer 2

1 is a function

2 and 3 is not

Explanation:

the first one doesn't have anything repeating but 2 and 3 both do