Answer:
The relation is not a function.The domain of this relation is :
{4,2} and the range of this relation is : {5,6,7,8}
Explanation:
We have given a relation.
We have to find the relation is function or not, and the domain and its range.
A function is a relation that assigns each input a single output.
It is not a function, because each value of domain has more than one value of range.
The domain of this relation is :{4,2}
The range of this relation is : {5,6,7,8}