## College Algebra (6th Edition)

Published by Pearson

# Chapter 2 - Functions and Graphs - Exercise Set 2.1: 5

#### Answer

The relation is a function. Domain: {3, -5, 7, 4}; Range: {-2, 1, 9}.

#### Work Step by Step

The relation is a function, as there is no more than one $y$ for each $x$. The Domain is the set of all $x$'s, or what "you start with". The Range is the set of all $y$'s, or what "you end up with", after each member of the Domain has been changed by the function.

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