### For the following exercises, (a) determine the domain and the range of each relation, and (b) state whether the relation is a function.

x |
-3 | -2 | -1 | 0 | 1 | 2 | 3 |

y |
9 | 4 | 1 | 0 | 1 | 4 | 9 |

**SOLUTION:**

The domain is .

The range is .

Since there is exactly one output for every input, then it is a function.