Which statement below best describes a function?

Question

A function is a relationship where each input has different outputs.

A function is a relationship where each output has the exactly one input.

A function is a relationship where each input has exactly one output.

A function is a relationship where each input has the same output.

Answer 1

The statement that best describes a function is:

A function is a relationship where each input has exactly one output.

This means that for every input value, there is a unique output value associated with it.