Question 1

If the dependent variable Y is directly related to the independent variable X, this means that changes in X cause changes in Y.

Accepted Answer

A) True 
 B)False  False

Question 2

The slope of a horizontal straight line is infinity.

Accepted Answer

A) True 
 B)False  False

Question 3

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

Accepted Answer

A) True 
 B)False  True

Question 4

Exhibit 1-5
  
-In Exhibit 1-2, curve B has a __________ slope that is __________ at every point.

Accepted Answer

A) positive; constant 
B) positive; changing 
C) negative; constant 
D) negative; changing 
E) changing; constant 
A) positive; constant 
B) positive; changing 
C) negative; constant 
D) negative; changing 
E) changing; constant

Question 5

Exhibit 1-10
  
-In Exhibit 1-8, the slope of the line is

Accepted Answer

A) negative for all values of x 
B) positive for all values of x 
C) zero at x = 7 
D) first negative, then positive as x increases 
E) negative for all values of y 
A) negative for all values of x 
B) positive for all values of x 
C) zero at x = 7 
D) first negative, then positive as x increases 
E) negative for all values of y

Question 6

Exhibit 1-9
  
-Using the values in Exhibit 1-7, 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 7

Suppose a graph with Ron's weight on the vertical axis and his consumption of ice cream on the horizontal axis indicated that for each serving of ice cream he ate, Ron would gain 3 pounds, regardless of how much ice cream he had already eaten. This graph would show a

Accepted Answer

A) horizontal line at weight = 3 
B) straight line with slope = 3 
C) straight line with slope = 1/2 
D) straight line with slope = -3 
E) straight line with slope = -1/3 
A) horizontal line at weight = 3 
B) straight line with slope = 3 
C) straight line with slope = 1/2 
D) straight line with slope = -3 
E) straight line with slope = -1/3

Question 8

The part of a graph that is most applicable to marginal analysis is the

Accepted Answer

A) origin 
B) slope 
C) horizontal axis 
D) dependent variable 
E) inverse relation 
A) origin 
B) slope 
C) horizontal axis 
D) dependent variable 
E) inverse relation

Question 9

The slope of a line

Accepted Answer

A) can only be calculated for straight lines 
B) varies at different points along a straight line 
C) indicates whether or not there is a causal relationship between variables 
D) is independent of the units of measurement used 
E) indicates how much the vertical variable changes for a given change in the horizontal variable 
A) can only be calculated for straight lines 
B) varies at different points along a straight line 
C) indicates whether or not there is a causal relationship between variables 
D) is independent of the units of measurement used 
E) indicates how much the vertical variable changes for a given change in the horizontal variable

Question 10

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 11

Exhibit 1-16
          
-Refer to exhibit 1-16. Which of the graphs illustrates an inverse or negative relationship between variable X and variable Y?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 12

Exhibit 1-12
  
-The slope of the line in Exhibit 1-12 is

Accepted Answer

A) positive and constant 
B) positive and increasing 
C) positive and decreasing 
D) negative and increasing 
E) negative and decreasing 
A) positive and constant 
B) positive and increasing 
C) positive and decreasing 
D) negative and increasing 
E) negative and decreasing

Question 13

The slope of a vertical straight line is infinity.

Accepted Answer

A) True 
 B)False

Question 14

A line is tangent to a curve if it

Accepted Answer

A) crosses the curve at one point 
B) touches the curve at one point, without crossing it 
C) crosses the curve at a minimum of two points 
D) never touches the curve 
E) forms a right triangle with the curve 
A) crosses the curve at one point 
B) touches the curve at one point, without crossing it 
C) crosses the curve at a minimum of two points 
D) never touches the curve 
E) forms a right triangle with the curve

Question 15

A downward-sloping straight line has a decreasing slope.

Accepted Answer

A) True 
 B)False

Question 16

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 17

Exhibit 1-9
 
-In Exhibit 1-9, the slope of the line is

Accepted Answer

A) negative for all values of x 
B) positive for all values of x 
C) never zero 
D) first negative, then positive as x increases 
E) first rising, then falling as x increases 
A) negative for all values of x 
B) positive for all values of x 
C) never zero 
D) first negative, then positive as x increases 
E) first rising, then falling as x increases

Question 18

Suppose the cost of producing copper tubing is $1 per foot. If production costs were measured on the vertical axis and quantity of copper tubing were measured on the horizontal axis, which of the following lines would have the smallest slope?

Accepted Answer

A) a line representing the quantity of tubing measured in inches 
B) a line representing the quantity of tubing measured in feet 
C) a line representing the quantity of tubing measured in yards 
D) the 45-degree line 
E) any vertical line 
A) a line representing the quantity of tubing measured in inches 
B) a line representing the quantity of tubing measured in feet 
C) a line representing the quantity of tubing measured in yards 
D) the 45-degree line 
E) any vertical line

Question 19

Exhibit 1-2
  
-In Exhibit 1-2, at y = 14, the

Accepted Answer

A) value of x is larger on curve A than on curve B 
B) value of x is smaller on curve A than on curve B 
C) value of x is the same on curve A as on curve B 
D) slope of line A is negative 
E) slope of line B is positive 
A) value of x is larger on curve A than on curve B 
B) value of x is smaller on curve A than on curve B 
C) value of x is the same on curve A as on curve B 
D) slope of line A is negative 
E) slope of line B is positive

Question 20

Exhibit 1-3
  
-In Exhibit 1-3, for any value of x, the

Accepted Answer

A) value of y is larger on curve A than on curve B 
B) value of y is smaller on curve A than on curve B 
C) value of y is the same on curve A as on curve B 
D) slope of line A is increasing 
E) slope of line B is negative 
A) value of y is larger on curve A than on curve B 
B) value of y is smaller on curve A than on curve B 
C) value of y is the same on curve A as on curve B 
D) slope of line A is increasing 
E) slope of line B is negative

Exam 2: Understanding Graphs-Appendix

If the dependent variable Y is directly related to the independent variable X, this means that changes in X cause changes in Y.

The slope of a horizontal straight line is infinity.

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

Exhibit 1-5 -In Exhibit 1-2, curve B has a __________ slope that is __________ at every point.

Exhibit 1-10 -In Exhibit 1-8, the slope of the line is

Exhibit 1-9 -Using the values in Exhibit 1-7, calculate the slope of a line graphed with x on the horizontal axis and y on the vertical axis.

Suppose a graph with Ron's weight on the vertical axis and his consumption of ice cream on the horizontal axis indicated that for each serving of ice cream he ate, Ron would gain 3 pounds, regardless of how much ice cream he had already eaten. This graph would show a

The part of a graph that is most applicable to marginal analysis is the

The slope of a line

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

Exhibit 1-16 -Refer to exhibit 1-16. Which of the graphs illustrates an inverse or negative relationship between variable X and variable Y?

Exhibit 1-12 -The slope of the line in Exhibit 1-12 is

The slope of a vertical straight line is infinity.

A line is tangent to a curve if it

A downward-sloping straight line has a decreasing slope.

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?

Exhibit 1-9 -In Exhibit 1-9, the slope of the line is

Suppose the cost of producing copper tubing is $1 per foot. If production costs were measured on the vertical axis and quantity of copper tubing were measured on the horizontal axis, which of the following lines would have the smallest slope?

Exhibit 1-2 -In Exhibit 1-2, at y = 14, the

Exhibit 1-3 -In Exhibit 1-3, for any value of x, the

The Art and Science of Economic Analysis

Economic Tools and Economics Systems

Economic Decision Makers

Demand, Supply, and Markets

Introduction to Macroeconomics

Tracking the Us Economy

Unemployment and Inflation

Productivity and Growth

Aaggregate Expenditure and Agregate Demand

Aggregate Expenditure and Aggregate Demand

Aggregate Supply

Fiscal Policy

Federal Budgets and Public Policy

Money and the Financial System

Banking and the Money Supply

Monetary Theory and Policy

Macro Policy Debate: Active or Passive

International Trade

International Finance

Economic Development

Filters

Exhibit 1-5 -In Exhibit 1-2, curve B has a slope that is at every point.