Question

Is the relation a function?

Answer 1

yes

Explanation:

For a relation to be a function each value of x in the domain must map to exactly one unique value of y in the range.

Since the relation is a straight line , then each value of x will only map to one unique value of y ( passes the vertical line test )

Answer 2

no the line is going side ways, it has to be up and down! or straight across!