Respuesta :

CrainerBoy

Answer:

1. A is function.

2. A, is function

3. B is function.

Step-by-step explanation:

Hope it helps.

2021nogline

Answer:

1) B

2) A

3) B

Step-by-step explanation:

In a function... no value can be repeated in the domain

This is especially easy to discern in graphs because of the Horizontal Line Test

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