Mark DugopolskiElementary Algebra

Edition 3

Chapter 7Systems of Linear Equations

and Inequalities

Copyright © 2000 by the McGraw-Hill Companies, Inc.

Independent, Inconsistent, and Dependent

7-1Page 371

Figure 7.5

7-2Page 373

Strategy for Solving a System by Substitution

7-3Page 378

Inconsistent and Dependent Systems

7-4Page 379

Strategy for Solving a System by Addition

7-5Page 386

Linear Inequality inTwo Variables

7-6Page 390

Figure 7.6

7-7Page 391 (Figure 7.6)

Strategy for Graphing a Linear Inequality in Two Variables

7-8Page 391

Figure 7.14

7-9Page 394 (Figure 7.14)

Figure 7.15

7-10Page 399 (Figure 7.15)

Figure 7.16

7-11Page 399 (Figure 7.16)

Figure 7.17

7-12Page 400 (Figure 7.17)

Figure 7.18

7-13Page 400 (Figure 7.18)

Figure 7.19

7-14Page 400 (Figure 7.19