Respuesta :

Answer:

A

Step-by-step explanation:

none of the input values are the same

Answer:

A

Step-by-step explanation:

A represents a funtion becasue none of the x (input) values are repeating.

Reasoning:

In B the x value of -1 is repeating

In C the x value of 3 is repeating

In D the x value of -1 is repeating