Question 1

Exhibit 1-9
   
-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 2

A downward-sloping straight line has a decreasing slope.

Accepted Answer

A) True 
 B)False  False

Question 3

A U-shaped curve has a positive slope everywhere.

Accepted Answer

A) True 
 B)False  False

Question 4

On a graph with x on the horizontal axis and y on the vertical axis, the origin is

Accepted Answer

A) the point where x = 0 and y = 0 
B) any point where x = 0 
C) any point where y = 0 
D) where a curve intersects the vertical axis 
E) where a curve intersects the horizontal axis 
A) the point where x = 0 and y = 0 
B) any point where x = 0 
C) any point where y = 0 
D) where a curve intersects the vertical axis 
E) where a curve intersects the horizontal axis

Question 5

Exhibit 1-2   
-In Exhibit 1-2, at x = 8, 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 negative 
E) slope of line B is positive 
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 negative 
E) slope of line B is positive

Question 6

A curved line may have a positive slope or a negative slope, but it cannot have both positive and negative areas of slope.

Accepted Answer

A) True 
 B)False

Question 7

The slope of a horizontal straight line is infinity.

Accepted Answer

A) True 
 B)False

Question 8

Exhibit 1-16           
-Refer to Exhibit 1-16. Which graph illustrates a positive relationship between variable X and variable Y initially but then a negative relationship?

Accepted Answer

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

Question 9

Exhibit 1-11   
-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 10

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 11

Exhibit 1-8   
-The slope of the line in Exhibit 1-6 is

Accepted Answer

A) 0.1 
B) 1 
C) 10 
D) -0.1 
E) -10 
A) 0.1 
B) 1 
C) 10 
D) -0.1 
E) -10

Question 12

Exhibit 1-16           
-Refer to Exhibit 1-16. Which graph illustrates a negative relationship between variable X and variable Y initially but then a positive relationship?

Accepted Answer

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

Question 13

Exhibit 1-8   
-Ron weighs 150 pounds. A graph relating Ron's weight on the vertical axis to Nancy's consumption of ice cream on the horizontal axis would be

Accepted Answer

A) a horizontal line at weight = 150 
B) a horizontal line at weight = 0 
C) a positively sloped line with decreasing slope 
D) a vertical line at weight = 150 
E) the origin 
A) a horizontal line at weight = 150 
B) a horizontal line at weight = 0 
C) a positively sloped line with decreasing slope 
D) a vertical line at weight = 150 
E) the origin

Question 14

Exhibit 1-12   
-A tangent line is a straight line

Accepted Answer

A) that intersects a curved line twice 
B) with a slope equal to infinity 
C) that touches a curved line at only one point 
D) that intersects a curved line at several points 
E) that runs along the vertical axis 
A) that intersects a curved line twice 
B) with a slope equal to infinity 
C) that touches a curved line at only one point 
D) that intersects a curved line at several points 
E) that runs along the vertical axis

Question 15

Exhibit 1-4   
-According to the curve in Exhibit 1-4,

Accepted Answer

A) if P = $8, then Q = 8 
B) if P = $10, then Q = 10 
C) Q increases as P increases 
D) Q decreases as P decreases 
E) there is a positive relation between Q and P 
A) if P = $8, then Q = 8 
B) if P = $10, then Q = 10 
C) Q increases as P increases 
D) Q decreases as P decreases 
E) there is a positive relation between Q and P

Question 16

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 17

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 18

Exhibit 1-2   
-In Exhibit 1-2, at y = 10, 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 19

If x causes y, then

Accepted Answer

A) x and y are inversely related 
B) y is a dependent variable 
C) other variables don't matter 
D) y must, in turn, cause x 
E) x and y are always in a direct relation to each other 
A) x and y are inversely related 
B) y is a dependent variable 
C) other variables don't matter 
D) y must, in turn, cause x 
E) x and y are always in a direct relation to each other

Question 20

Exhibit 1-14   
-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

Exam 22:Understanding Graphs

Exhibit 1-9 -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.

A U-shaped curve has a positive slope everywhere.

On a graph with x on the horizontal axis and y on the vertical axis, the origin is

Exhibit 1-2 -In Exhibit 1-2, at x = 8, the

A curved line may have a positive slope or a negative slope, but it cannot have both positive and negative areas of slope.

The slope of a horizontal straight line is infinity.

Exhibit 1-16 -Refer to Exhibit 1-16. Which graph illustrates a positive relationship between variable X and variable Y initially but then a negative relationship?

Exhibit 1-11 -In Exhibit 1-9, the slope of the line is

The slope of a line

Exhibit 1-8 -The slope of the line in Exhibit 1-6 is

Exhibit 1-16 -Refer to Exhibit 1-16. Which graph illustrates a negative relationship between variable X and variable Y initially but then a positive relationship?

Exhibit 1-8 -Ron weighs 150 pounds. A graph relating Ron's weight on the vertical axis to Nancy's consumption of ice cream on the horizontal axis would be

Exhibit 1-12 -A tangent line is a straight line

Exhibit 1-4 -According to the curve in Exhibit 1-4,

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?

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 1-2 -In Exhibit 1-2, at y = 10, the

If x causes y, then

Exhibit 1-14 -The part of a graph that is most applicable to marginal analysis is 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

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