Answer
Domain: {-3, 0, 3}, Range: {-3, 0, 3}, Yes
Work Step by Step
The domain is the set of all first components of the ordered pairs, or {-3, 0, 3}. The range is the set of all second components of the ordered pairs, or also {-3, 0, 3}. This relation is a function because each component of the domain corresponds to exactly one component in the range.