Which of the following correctly describes the mapping below?

Question

Which of the following correctly describes the mapping below?



This mapping represents a function because every input has exactly one output.

This mapping does not represent a function because there are more inputs than outputs.

This mapping represents a function because 5 is paired with 5.

This mapping does not represent a function because 5 is an input and an output.

Answer 1

This mapping represents a function because every input has exactly one output.