Economics for Today
11th Edition by
Irvin B. Tucker
Complete Chapter Solutions Manual
are included (Ch 1 to 30)
** Immediate Download
** Swift Response
** All Chapters included
, Instructor Manual: Tucker, Economics for Today, ISBN: 9780357720936; Appendix to Chapter 01: Applying Graphs to
Economics
Instructor Manual
Tucker, Economics for Today, ISBN: 9780357720936; Appendix to Chapter 01: Applying Graphs
to Economics
Table of Contents
Purpose and Perspective of the Chapter ....................................................................................... 2
Cengage Supplements ..................................................................................................................... 2
Key Terms .......................................................................................................................................... 2
What’s New in This Chapter ............................................................................................................. 3
Chapter Outline ................................................................................................................................. 3
Discussion Questions ....................................................................................................................... 3
Additional Activities and Assignments ........................................................................................... 4
Appendix ............................................................................................................................................ 7
Generic Rubrics ............................................................................................................................................. 7
Standard Writing Rubric ............................................................................................................................... 7
Standard Discussion Rubric........................................................................................................................... 8
© 2022 Cengage. All Rights Reserved. 1
, Instructor Manual: Tucker, Economics for Today, ISBN: 9780357720936; Appendix to Chapter 01: Applying Graphs to
Economics
Purpose and Perspective of the Chapter
The purpose of the Appendix to Chapter 01 is to examine how economic models and
principles can be expressed graphically. In economics, graphs are used as visual aids to
illustrate relationships between economic variables. If a relationship exists between two
variables, then the relationship can be either direct (also known as a positive relationship)
or inverse (also known as a negative relationship).
A direct relationship between two variables means that as one variable increases, this
causes the other variable to also increase in value, and vice versa. A direct relationship is
illustrated graphically as an upward sloping, or positively sloped line or curve.
An inverse relationship between two variables means that as one variable increases, this
causes the other variable to decrease in value, and vice versa. An inverse relationship is
illustrated graphically as a downward sloping, or negatively sloped line or curve.
An independent relationship means there is no relationship between two variables. When
one variable changes, the other remains unchanged.
A shift in a curve (or line) occurs when the ceteris paribus assumption is relaxed and a third
variable, not on either axis of the graph, is allowed to change.
Cengage Supplements
The following product-level supplements provide additional information that may help you
in preparing your course. They are available in the Instructor Resource Center.
• PowerPoint Slides
• Test Bank
[return to top]
Key Terms
Direct relationship: A positive association between two variables. When one variable
increases, the other variable increases, and when one variable decreases, the other
variable decreases.
Independent relationship: A zero association between two variables. When one variable
changes, the other variable remains unchanged.
Inverse relationship: A negative association between two variables. When one variable
increases, the other variable decreases, and vice versa.
Slope: The ratio of the change in the variable on the vertical axis (the rise or fall) to the
change in the variable on the horizontal axis (the run).
[return to top]
© 2022 Cengage. All Rights Reserved. 2
11th Edition by
Irvin B. Tucker
Complete Chapter Solutions Manual
are included (Ch 1 to 30)
** Immediate Download
** Swift Response
** All Chapters included
, Instructor Manual: Tucker, Economics for Today, ISBN: 9780357720936; Appendix to Chapter 01: Applying Graphs to
Economics
Instructor Manual
Tucker, Economics for Today, ISBN: 9780357720936; Appendix to Chapter 01: Applying Graphs
to Economics
Table of Contents
Purpose and Perspective of the Chapter ....................................................................................... 2
Cengage Supplements ..................................................................................................................... 2
Key Terms .......................................................................................................................................... 2
What’s New in This Chapter ............................................................................................................. 3
Chapter Outline ................................................................................................................................. 3
Discussion Questions ....................................................................................................................... 3
Additional Activities and Assignments ........................................................................................... 4
Appendix ............................................................................................................................................ 7
Generic Rubrics ............................................................................................................................................. 7
Standard Writing Rubric ............................................................................................................................... 7
Standard Discussion Rubric........................................................................................................................... 8
© 2022 Cengage. All Rights Reserved. 1
, Instructor Manual: Tucker, Economics for Today, ISBN: 9780357720936; Appendix to Chapter 01: Applying Graphs to
Economics
Purpose and Perspective of the Chapter
The purpose of the Appendix to Chapter 01 is to examine how economic models and
principles can be expressed graphically. In economics, graphs are used as visual aids to
illustrate relationships between economic variables. If a relationship exists between two
variables, then the relationship can be either direct (also known as a positive relationship)
or inverse (also known as a negative relationship).
A direct relationship between two variables means that as one variable increases, this
causes the other variable to also increase in value, and vice versa. A direct relationship is
illustrated graphically as an upward sloping, or positively sloped line or curve.
An inverse relationship between two variables means that as one variable increases, this
causes the other variable to decrease in value, and vice versa. An inverse relationship is
illustrated graphically as a downward sloping, or negatively sloped line or curve.
An independent relationship means there is no relationship between two variables. When
one variable changes, the other remains unchanged.
A shift in a curve (or line) occurs when the ceteris paribus assumption is relaxed and a third
variable, not on either axis of the graph, is allowed to change.
Cengage Supplements
The following product-level supplements provide additional information that may help you
in preparing your course. They are available in the Instructor Resource Center.
• PowerPoint Slides
• Test Bank
[return to top]
Key Terms
Direct relationship: A positive association between two variables. When one variable
increases, the other variable increases, and when one variable decreases, the other
variable decreases.
Independent relationship: A zero association between two variables. When one variable
changes, the other variable remains unchanged.
Inverse relationship: A negative association between two variables. When one variable
increases, the other variable decreases, and vice versa.
Slope: The ratio of the change in the variable on the vertical axis (the rise or fall) to the
change in the variable on the horizontal axis (the run).
[return to top]
© 2022 Cengage. All Rights Reserved. 2
