Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 1 - Precalculus Review - 1.1 Real Numbers, Functions, and Graphs - Preliminary Questions: 5

Answer

The point $(9,-4)$

Work Step by Step

The line $x=9$ is the set of points (9, y), for any real y. The line $y=-4$ is the set of points (x, -4), for any real x. Now, it is easy to conclude that the intersection of the lines $x=9$ and $y=-4$ is the point $(9,-4)$
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