## Intermediate Algebra (6th Edition)

Domain: {-2, 0, $\pi$, 4}, Range: {-2, 0, $\pi$, 4}, Yes
The domain is the set of all first components of the ordered pairs, or {-2, 0, $\pi$, 4}. The range is the set of all second components of the ordered pairs, or also {-2, 0, $\pi$, 4}. This relation is a function because each component of the domain corresponds to exactly one component in the range.