Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 7 - Functions and Graphs - 7.2 Domain and Range - 7.2 Exercise Set - Page 458: 26


Domain=(-$\infty$,$\infty$ ) Range={-2}

Work Step by Step

This function is a horizontal line going through the y-axis at point -2. The function stretches on indefinitely to the left and to the right. This means our domain is infinite in both directions. Domain=(-$\infty$,$\infty$ ) The function is a horizontal line. We can not use interval notation because there is only one number. We instead use set builder notations. Range={-2}
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