Unit 2: Equations in Two Variables Page: 204
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Chapter 4: Graphing Linear Equations and Functions
204
Prerequisite Skills 204
4.1 Plot Points in a Coordinate Plane 206
4.2 Graph Linear Equations 215
Graphing Calculator Activity: Graph Linear Equations 222
4.3 Graph Using Intercepts 225
Assessment: Quiz for Lessons 4.1-4.3 232
Mixed Review for TEKS 233
4.4 Find Slope and Rate of Change 235
Investigating Algebra Activity: Slopes of Lines 234
4.5 Graph Using Slope-Intercept Form 244
Investigating Algebra Activity: Slope and
y
-Intercept 243
Assessment: Quiz for Lessons 4.4-4.5 250
4.6 Model Direct Variation 253
Problem Solving Workshop 260
4.7 Graph Linear Functions 262
Assessment: Quiz for Lessons 4.6-4.7 268
Mixed Review for TEKS 269
Assessment: Chapter Summary and Review 270
Assessment: Chapter Test 275
Assessment: TAKS Preparation and Practice 276
Chapter 5: Writing Linear Equations
280
Prerequisite Skills 280
5.1 Write Linear Equations in Slope-Intercept Form 283
Investigating Algebra Activity: Modeling Linear Relationships 282
Graphing Calculator Activity: Investigate Families of Lines 290
5.2 Use Linear Equations in Slope-Intercept Form 292
Problem Solving Workshop 300
5.3 Write Linear Equations in Point-Slope Form 302
5.4 Write Linear Equations in Standard Form 311
Assessment: Quiz for Lessons 5.1-5.4 316
Mixed Review for TEKS 317
5.5 Write Equations of Parallel and Perpendicular Lines 319
Investigating Algebra Activity: If-Then Statements and Their Converses 318
5.6 Fit a Line to Data 325
Graphing Calculator Activity: Perform Linear Regression 332
5.7 Predict with Linear Models 335
Investigating Algebra Activity: Collecting and Organizing Data 334
Assessment: Quiz for Lessons 5.5-5.7 341
Internet Activity: Model Data from the Internet 342
Mixed Review for TEKS 343
Assessment: Chapter Summary and Review 344
Assessment: Chapter Test 349
Assessment: TAKS Preparation and Practice 350
Chapter 6: Solving and Graphing Linear Inequalities
354
Prerequisite Skills 354
6.1 Solve Inequalities Using Addition and Subtraction 356
6.2 Solve Inequalities Using Multiplication and Division 363
Investigating Algebra Activity: Inequalities with Negative Coefficients 362
Assessment: Quiz for Lessons 6.1-6.2 368
6.3 Solve Multi-Step Inequalities 369
Problem Solving Workshop 375
6.4 Solve Compound Inequalities 380
Investigating Algebra Activity: Statements with
and
and
or
379
Assessment: Quiz for Lessons 6.2-6.4 387
Graphing Calculator Activity: Solve Compound Inequalities 388
Mixed Review for TEKS 389
6.5 Solve Absolute Value Equations 390
6.6 Solve Absolute Value Inequalities 398
6.7 Graph Linear Inequalities in Two Variables 405
Investigating Algebra Activity: Linear Inequalities in Two Variables 404
Assessment: Quiz for Lessons 6.5-6.7 412
Mixed Review for TEKS 413
Assessment: Chapter Summary and Review 414
Assessment: Chapter Test 419
Assessment: TAKS Preparation and Practice 420
Chapter 7: Systems of Equations and Inequalities
424
Prerequisite Skills 424
7.1 Solve Linear Systems by Graphing 427
Investigating Algebra Activity: Solving Linear Systems Using Tables 426
Graphing Calculator Activity: Solve Linear Systems by Graphing 434
7.2 Solve Linear Systems by Substitution 435
Assessment: Quiz for Lessons 7.1-7.2 441
Problem Solving Workshop 442
7.3 Solve Linear Systems by Adding or Subtracting 444
Investigating Algebra Activity: Linear Systems and Elimination 443
7.4 Solve Linear Systems by Multiplying First 451
Assessment: Quiz for Lessons 7.3-7.4 457
Mixed Review for TEKS 458
7.5 Solve Special Types of Linear Systems 459
7.6 Solve Systems of Linear Inequalities 466
Assessment: Quiz for Lessons 7.5-7.6 472
Mixed Review for TEKS 473
Assessment: Chapter Summary and Review 474
Assessment: Chapter Test 479
Assessment: TAKS Preparation and Practice 480
Assessment: Cumulative Review, Chapters 1-7 484