look at this table:\nis this relation a function?

look at this table:\nis this relation a function?
Answer
Explanation:
Step1: Recall the definition of a function
A relation is a function if for each input value (x), there is exactly one output value (y).
Step2: Check the (x)-values in the table
The (x)-value (13) appears twice. For (x = 13), the (y)-values are (-19) and (15). Since one input ((x=13)) has two different outputs ((y=-19) and (y = 15)), this relation does not satisfy the definition of a function.
Answer:
no