The relation is not a function because there is one x-value corresponding to multiple y-values.
Why it is not a function?
For a function, each point on the domain is mapped into only one point on the range.
In this relation we can see the points:
(1, 4), (3, -1), (-1, -2), and (1, -3).
Then we can see that the element of the domain "1" is being mapped into two different elements of the range (4, and -3).
Then the relation is not a function because there is one x-value corresponding to multiple y-values.
If you want to learn more about functions:
https://brainly.com/question/4025726
#SPJ2
