Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 1 - Graphs - 1.2 Graphs of Equations in Two Variables; Intercepts; Symmetry - 1.2 Assess Your Understanding - Page 18: 82

Answer

$-2$.

Work Step by Step

If a graph is symmetric to the x-axis then if $(x,y)$ is on the graph $(x,-y)$ will be also on the graph. Hence if $(0,2)$ is on the graph $(0,-2)$ will be also on the graph. Hence the other y-intercept is $-2$.
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