# Chapter 3 - Section 3.2 - Introduction to Functions - Exercise Set: 8

Domain: {-2, 0, $\pi$, 4}, Range: {-2, 0, $\pi$, 4}, Yes

#### Work Step by Step

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.

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