LA202_BD Ch 2 Study Guide
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Page 1 of 2 66 Chapter 2 What’s the chapter about? Chapter 2 is about linear equations and functions. In Chapter 2 you’ll learn • how to graph ordered pairs, relations, functions, linear equations and inequalities in two variables, piecewise functions, and absolute value functions. • how to write equations of lines. • how to solve real-life problems using graphs and equations. CHAPTER 2 Study Guide PREVIEW Are you ready for the chapter? SKILL REVIEW Do these exercises to review key skills that you’ll apply in this chapter. See the given reference page if there is something you don’t understand. Evaluate the expression for the given values of x and y. (Review Example 3, p. 12) 1. y x º º 7 3 ; x = 2, y = 5 2. 5 6 º º y x ; x = 4, y = 1 3. 8 3 º º y x ; x = º1, y = º4 Solve the equation for y. (Review Example 1, p. 26) 4. 3x + y = 4 5. x º 2y = 10 6. 5x + 6y = º60 Solve the inequality. (Review Examples 1 and 2, p. 42) 7. 2x + 9 < 18 8. 6 º 0.5y ≤ 19 9. 2x + 3 > 6x º 7 PREPARE Here’s a study strategy! STUDY STRATEGY Review • graph, p. 3 • linear equation, p. 19 • solution, p. 19 • linear inequality in one variable, p. 41 • absolute value, p. 50 New • relation, p. 67 • function, p. 67 • ordered pair, p. 67 • coordinate plane, p. 67 • linear function, p. 69 • slope, p. 75 • slope-intercept form, p. 82 • standard form, p. 84 • direct variation, p. 94 • scatter plot, p. 100 • linear inequality in two variables, p. 108 • piecewise function, p. 114 KEY VOCABULARY Skills File In a notebook, make a file of the skills you learn throughout this course. On the left side of the paper, write an important skill and the lesson that it comes from. On the right side of the paper, give an example of the skill in use. Go back now and make a skills file for Chapter 1. Then continue with Chapter 2. STUDENT HELP Study Tip “Student Help” boxes throughout the chapter give you study tips and tell you where to look for extra help in this book and on the Internet.
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Transcript of LA202_BD Ch 2 Study Guide
Page 1 of 2
66 Chapter 2
What’s the chapter about?Chapter 2 is about linear equations and functions. In Chapter 2 you’ll learn
• how to graph ordered pairs, relations, functions, linear equations and inequalitiesin two variables, piecewise functions, and absolute value functions.
• how to write equations of lines.
• how to solve real-life problems using graphs and equations.
CHAPTER
2Study Guide
PREVIEW
Are you ready for the chapter?SKILL REVIEW Do these exercises to review key skills that you’ll apply in thischapter. See the given reference page if there is something you don’t understand.
Evaluate the expression for the given values of x and y. (Review Example 3, p. 12)
1. �yx
ºº
73�; x = 2, y = 5 2. �
56
ºº
yx�; x = 4, y = 1 3. �
83
ºº
yx�; x = º1, y = º4
Solve the equation for y. (Review Example 1, p. 26)
4. 3x + y = 4 5. x º 2y = 10 6. 5x + 6y = º60
Solve the inequality. (Review Examples 1 and 2, p. 42)
7. 2x + 9 < 18 8. 6 º 0.5y ≤ 19 9. 2x + 3 > 6x º 7
PREPARE
Here’s a study strategy!STUDY
STRATEGY
� Review
• graph, p. 3
• linear equation, p. 19
• solution, p. 19
• linear inequality in onevariable, p. 41
• absolute value, p. 50
� New
• relation, p. 67
• function, p. 67
• ordered pair, p. 67
• coordinate plane, p. 67
• linear function, p. 69
• slope, p. 75
• slope-intercept form, p. 82
• standard form, p. 84
• direct variation, p. 94
• scatter plot, p. 100
• linear inequality in twovariables, p. 108
• piecewise function, p. 114
KEY VOCABULARY
Skills File
In a notebook, make a file of the skills you learnthroughout this course. On the left side of thepaper, write an important skill and the lesson thatit comes from. On the right side of the paper, givean example of the skill in use. Go back now andmake a skills file for Chapter 1. Then continuewith Chapter 2.
STUDENT HELP
Study Tip“Student Help” boxesthroughout the chaptergive you study tips andtell you where to look forextra help in this bookand on the Internet.
