Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning
ISBN 10: 0-49539-132-8
ISBN 13: 978-0-49539-132-6

Chapter 1 - Speaking Mathematically - Exercise Set 1.3: 5

Answer

a. Yes. Yes. No. Yes. b.
1477377047

Work Step by Step

The graph of $S$ is the line $x=y$ with the lower portion shaded in, because $x\geq y$ for all these points in the Cartesian plane.
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