Answer: Given relation is NOT a function
A relation is said to be a function if no value in its domain is paired up with more than one value in its range.
Since x values represent the Domain of a relation and y values represent the Range of a relation, in terms of x and y we can say:
A relation is said to be a function if an x-value is not paired up with more than one y-value.
From the above table we can see that the value 3 in x column(Domain) is paired with more than 1 y-values. So the given relation is not a function.
