Consider the relation defined by the set of ordered pairs: $\{(-3, 27), (-2, 8), (-1, 1), (0, 0), (1, 1), (2, 8), (3, 27)\}$. We can determine if this relation is a mathematical function by examining its coordinates. Each $x$-value is matched with only one $y$-value, so this relation is a function. The domain is the set of all unique $x$-values: $\{-3, -2, -1, 0, 1, 2, 3\}$, and the range is the set of all unique $y$-values: $\{0, 1, 8, 27\}$.