Question 1

If slope = 2 for a line on a graph with x on the horizontal axis and y on the vertical axis, then if

Accepted Answer

A) x decreases by 4, y decreases by 8 
B) x = -4, then y = -2 
C) y decreases by 4, x decreases by 8 
D) x = -4, y = -8 
E) x increases by 4, y decreases by 8 
A) x decreases by 4, y decreases by 8 
B) x = -4, then y = -2 
C) y decreases by 4, x decreases by 8 
D) x = -4, y = -8 
E) x increases by 4, y decreases by 8

Question 2

Exhibit 1-9   Using the values in Exhibit 1-9, calculate the slope of a line graphed with x on the horizontal axis and y on the vertical axis.

Accepted Answer

A) 0.5 
B) 2 
C) 1.5 
D) 100 
E) the slope cannot be determined without additional information 
A) 0.5 
B) 2 
C) 1.5 
D) 100 
E) the slope cannot be determined without additional information

Question 3

Exhibit 1-1   Point b in Exhibit 1-1 represents

Accepted Answer

A) x = 30, y = 60 
B) x = 60, y = 30 
C) x + y = 60 
D) x + y = 30 
E) b = 90 
A) x = 30, y = 60 
B) x = 60, y = 30 
C) x + y = 60 
D) x + y = 30 
E) b = 90

Question 4

Suppose y is measured on the vertical axis, x is on the horizontal axis, and the various combinations of x and y are shown by a nonvertical straight line.Which of the following must be true?

Accepted Answer

A) There is a negative relation between x and y. 
B) There is a positive relation between x and y. 
C) There is a causal relation between x and y. 
D) If the value of x is known, the value of y can be determined. 
E) The value of y is independent of the value of x. 
A) There is a negative relation between x and y. 
B) There is a positive relation between x and y. 
C) There is a causal relation between x and y. 
D) If the value of x is known, the value of y can be determined. 
E) The value of y is independent of the value of x.

Question 5

Most economics graphs reflect the relationship between how many economic variables?

Accepted Answer

A) three 
B) two 
C) four 
D) thirty 
E) twenty 
A) three 
B) two 
C) four 
D) thirty 
E) twenty

Question 6

Moderate exercise is better than none, but excessive exercise is harmful.What is the shape of the graph of health benefits versus hours of exercise per week if health benefits are measured on the vertical axis and exercise is measured on the horizontal axis?

Accepted Answer

A) a positively sloped straight line 
B) a negatively sloped straight line 
C) a vertical straight line 
D) a U-shaped curve 
E) a hill-shaped curve 
A) a positively sloped straight line 
B) a negatively sloped straight line 
C) a vertical straight line 
D) a U-shaped curve 
E) a hill-shaped curve

Question 7

The numerical value of the slope of a line depends in part on the units of measurement used.

Accepted Answer

A) True 
 B)False

Question 8

A downward-sloping straight line has a decreasing slope.

Accepted Answer

A) True 
 B)False

Question 9

Exhibit 1-7   The slope of the straight line in Exhibit 1-7 is

Accepted Answer

A) greater at point a than at point b 
B) the same at points a and b 
C) zero because the line is straight 
D) negative because an inverse relation is shown 
E) positive because the line lies to the right of the y-axis 
A) greater at point a than at point b 
B) the same at points a and b 
C) zero because the line is straight 
D) negative because an inverse relation is shown 
E) positive because the line lies to the right of the y-axis

Question 10

A line on a graph will shift if

Accepted Answer

A) the independent variable changes 
B) there are no changes in any variables considered in the model 
C) there is a change in a variable that had previously been assumed to be constant 
D) a change in the independent variable causes a change in the dependent variable 
E) the independent variable and the dependent variable are unrelated 
A) the independent variable changes 
B) there are no changes in any variables considered in the model 
C) there is a change in a variable that had previously been assumed to be constant 
D) a change in the independent variable causes a change in the dependent variable 
E) the independent variable and the dependent variable are unrelated

Question 11

Exhibit 1-14   Using Exhibit 1-14, calculate the slope of the curve where x equals 50.

Accepted Answer

A) 0 
B) 1 
C) infinite 
D) -1 
E) the slope cannot be determined because there is no tangent line 
A) 0 
B) 1 
C) infinite 
D) -1 
E) the slope cannot be determined because there is no tangent line

If slope = 2 for a line on a graph with x on the horizontal axis and y on the vertical axis, then if

Exhibit 1-9 Using the values in Exhibit 1-9, calculate the slope of a line graphed with x on the horizontal axis and y on the vertical axis.

Exhibit 1-1 Point b in Exhibit 1-1 represents

Suppose y is measured on the vertical axis, x is on the horizontal axis, and the various combinations of x and y are shown by a nonvertical straight line.Which of the following must be true?

Most economics graphs reflect the relationship between how many economic variables?

Moderate exercise is better than none, but excessive exercise is harmful.What is the shape of the graph of health benefits versus hours of exercise per week if health benefits are measured on the vertical axis and exercise is measured on the horizontal axis?

The numerical value of the slope of a line depends in part on the units of measurement used.

A downward-sloping straight line has a decreasing slope.

Exhibit 1-7 The slope of the straight line in Exhibit 1-7 is

A line on a graph will shift if

Exhibit 1-14 Using Exhibit 1-14, calculate the slope of the curve where x equals 50.

The Art and Science of Economic Analysis

Economic Tools and Economics Systems

Economic Decision Makers

Demand, Supply, and Markets

Elasticity of Demand and Supply

Appendix--Price Elasticity and Tax Incidence

Consumer Choice and Demand

Appendix--Indifference Curves and Utility Maximization

Production and Cost in the Firm

A--Perfect Competition

B--Perfect Competition

A--Monopoly

B--Monopoly

Monopolistic Competition and Oligopoly

Resource Markets

Labor Markets and Labor Unions

Capital, Interest, and Corporate Finance

Transaction Costs, Imperfect Information, and Behavioral Economics

Economic Regulation and Antitrust Policy

Public Goods and Public Choice

Externalities and the Environment

Income Distribution and Poverty

International Trade

International Finance

Economic Development

Filters

Exam 1: Appendix--Understanding Graphs

If slope = 2 for a line on a graph with x on the horizontal axis and y on the vertical axis, then if

Exhibit 1-9 Using the values in Exhibit 1-9, calculate the slope of a line graphed with x on the horizontal axis and y on the vertical axis.

Exhibit 1-1 Point b in Exhibit 1-1 represents

Suppose y is measured on the vertical axis, x is on the horizontal axis, and the various combinations of x and y are shown by a nonvertical straight line.Which of the following must be true?

Most economics graphs reflect the relationship between how many economic variables?

Moderate exercise is better than none, but excessive exercise is harmful.What is the shape of the graph of health benefits versus hours of exercise per week if health benefits are measured on the vertical axis and exercise is measured on the horizontal axis?

The numerical value of the slope of a line depends in part on the units of measurement used.

A downward-sloping straight line has a decreasing slope.

Exhibit 1-7 The slope of the straight line in Exhibit 1-7 is

A line on a graph will shift if

Exhibit 1-14 Using Exhibit 1-14, calculate the slope of the curve where x equals 50.

The Art and Science of Economic Analysis

Economic Tools and Economics Systems

Economic Decision Makers

Demand, Supply, and Markets

Elasticity of Demand and Supply

Appendix--Price Elasticity and Tax Incidence

Consumer Choice and Demand

Appendix--Indifference Curves and Utility Maximization

Production and Cost in the Firm

A--Perfect Competition

B--Perfect Competition

A--Monopoly

B--Monopoly

Monopolistic Competition and Oligopoly

Resource Markets

Labor Markets and Labor Unions

Capital, Interest, and Corporate Finance

Transaction Costs, Imperfect Information, and Behavioral Economics

Economic Regulation and Antitrust Policy

Public Goods and Public Choice

Externalities and the Environment

Income Distribution and Poverty

International Trade

International Finance

Economic Development

Filters