Respuesta :

Lilbeckyrecky

Answer: The first, second, and fourth is functions because every input has exactly one output.

The third and last ones is not functions.

gmiller914770

Answer:

The first, third, and second are functions and the fourth and fifth are not a function

Step-by-step explanation:

Function meaning all the numbers in the y column are different so for an example 123 but if the numbers were 212 there are multiply of one number so that would not be a function

Hope this helps you point plz mark me as brainliest

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