Determine whether Relations Are Functions { (-2, 4), (0, 2), (-1, 3), (4, -2) }

The set of ordered pairs above:
A mapping diagram has 2 boxes. Box 1 is labeled domain with entries negative 3, 4, negative 1, 5. Box 2 is labeled range with entries 3, 7, negative 2. Arrows show which domain value match onto which range value. An arrow goes from negative 3 to 3, 4 to 7, and arrows go from both negative 1 and 5 to negative 2.
The mapping diagram above:

A 2-column table with 4 rows. The first column is labeled x with entries negative 3, negative 1, 1, negative 1. The second column is labeled y with entries 5, 2, negative 1, 4.
The table above: