#### Answer

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

#### 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.

Published by
Cengage Learning

ISBN 10:
0-49539-132-8

ISBN 13:
978-0-49539-132-6

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

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