Which of the following represents a function

D

Step-by-step explanation:

A has -1 going to two different y values so it is not a function

B has x = -1 going to two different y values so it is not a function

C has the input of 3 going to two different y values so it is not a function

D each input goes to only 1 output so it is a function

Hey there! I believe the answer would be choice D. because it is the only choice that has one input for each output.

Hope this helps!

Have a wonderful day!

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step-by-step explanati∵∵∴∴on:

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