Find the domain and the range of the relation. Then determine whether the relation is a function.
{(-1, -7), (1, 4), (4, 1), (8, -2)}
The domain of the relation is the set of all x-values or the first value in each ordered pair: {-1, 1, 4, 8}.
The range of the relation is the set of all y-values or the second value in each ordered pair: {-7, 4, 1, -2}.
To determine if the relation is a function, we need to check if each x-value is paired with only one y-value. Since there are no repeated x-values in the relation, each x-value is paired with a unique y-value. Therefore, the relation is a function.