Question #2 - Is this relation a function?

Question

Question #2 - Is this relation a function?

Please answer below. You MUST include an explanation to get full credit.

Explain your thinking.
To determine if the relation is a function, it is crucial to have a mapping for each input value in the domain. Since the mapping for 3 is not given, we cannot confirm if it has a unique output value, and therefore, we cannot determine if this relation is a function.

Answer 1

This relation is not a function because there is a missing mapping for the input value of 3. In order for a relation to be a function, each input value in the domain must have a unique output value. Since the mapping for 3 is not given, we cannot determine if it has a unique output value. Therefore, we cannot conclude that this relation is a function.