College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 2 - Functions and Graphs - Concept and Vocabulary Check - Page 223: 9


$x∈[0;3)$; DOMAIN.

Work Step by Step

This is standard interval notion. What is important to note is that the blank dot at $(1,3)$ signifies that $3$ is not included in the function's domain. Simply said, all $x$'s of a function represent its domain, while all $y$'s represents its range. In this case, the shaded set of numbers shows the $x$'s of the function, therefore, it is its domain.
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