Final answer:
A relation is a set of ordered pairs that relates one set of values, called the domain, to another set of values, called the range. In order for a relation to be considered a function, each value in the domain must have exactly one corresponding value in the range.
Step-by-step explanation:
A relation is a set of ordered pairs that relates one set of values, called the domain, to another set of values, called the range. In order for a relation to be considered a function, each value in the domain must have exactly one corresponding value in the range. To determine if this relation is a function, we need to check if any x-value in the set of ordered pairs is repeated. If there are no repeated x-values, then the relation is a function.
In this case, the set of ordered pairs is (6,13) (17,-2) (-15,6) (18,8) (10,18).
Since there are no repeated x-values in the set, the relation is a function.