Deck 1: A: Appendix: Applying Graphs to Economics

Question 1

When an inverse relationship is graphed,the resulting line or curve is:

A) horizontal.
B) vertical.
C) upward-sloping.
D) downward-sloping.

Answer 1

D

Question 2

A direct relationship is expressed graphically as a:

A) positively sloped line or curve.
B) negatively sloped line or curve.
C) horizontal line.
D) vertical line.

Answer 2

A

Question 3

A direct relationship exists when:

A) there is no association between two variables.
B) one variable increases and there is no change in the other variable.
C) one variable increases and the other variable increases.
D) one variable increases and the other variable decreases.

Answer 3

C

Question 4

Straight line AB in Exhibit 1A-1 shows that:

A) increasing values for X will decrease the values of Y.
B) decreasing values for X will increase the values of Y.
C) there is a direct relationship between X and Y.
D) all of the above.

Question 5

In Exhibit 1A-1,as X increases along the horizontal axis,corresponding to points A-B on the line,the Y values increase.The relationship between the X and Y variables is:

A) direct.
B) inverse.
C) independent.
D) variable.

Question 6

Which of the following pairs is the most likely to exhibit an inverse relationship?

A) The amount of time you study and your grade point average.
B) People's annual income and their expenditure on personal computers.
C) Baseball players' salaries and their batting averages.
D) The price of a concert and the number of tickets people purchase.

Question 7

What is used to illustrate an independent relationship between two variables?

A) An upward-sloping curve.
B) A downward-sloping curve.
C) A hill-shaped curve.
D) A horizontal or vertical line.

Question 8

Exhibit 1A-2 Straight line

Straight line CD in Exhibit 1A-2 shows that:

A) increasing values for X will increase the value of Y.
B) decreasing values for X will decrease the value of Y.
C) there is a direct relationship between X and Y.
D) all of the above.

Question 9

Which of the following pairs is the most likely to exhibit a direct relationship?

A) The price of gasoline and the amount of gasoline that people purchase.
B) Cholesterol levels and the likelihood of developing heart disease.
C) Outdoor temperature and heating oil sales.
D) Annual income and weekly pawn shop visits.

Question 10

Exhibit 1A-2 Straight line

In Exhibit 1A-2,as X increases along the horizontal axis,corresponding to points C-D on the line,the Y values increase.The relationship between the X and Y variables is:

A) direct.
B) inverse.
C) independent.
D) variable.

Question 11

An inverse relationship exists when:

A) there is no association between two variables.
B) one variable increases and there is no change in the other variable.
C) one variable increases and the other variable increases.
D) one variable increases and the other variable decreases.

Question 12

Suppose two variables are directly related.If one variable rises,then the other variable:

A) also rises.
B) falls.
C) remains unchanged.
D) reacts unpredictably.

Question 13

Which of the following is used to illustrate an independent relationship between two variables?

A) An upward-sloping curve
B) A downward-sloping curve
C) A hill-shaped curve
D) A horizontal or vertical line

Question 14

Which of the following statements is correct?

A) Slope is the ratio of the vertical change (the rise or fall) to the horizontal change (the run).
B) A direct relationship is one in which two variables change in the same direction.
C) An inverse relationship is one in which two variables change in opposite directions.
D) An independent relationship is one in which two variables are unrelated.
E) All of the above.

Question 15

An upward-sloping line or curve is used to illustrate:

A) a direct relationship.
B) an inverse relationship.
C) two unrelated variables.
D) the ceteris paribus assumption.

Question 16

As shown in Exhibit 1A-1,the slope of straight line AB:

A) decreases with increases in X.
B) increases with increases in X.
C) increases with decreases in X.
D) remains constant with changes in X.

Question 17

Measured between two points on a curve,the ratio of the change in the variable on the vertical axis to the change in the variable on the horizontal axis is the:

A) axis.
B) slope.
C) dependent curve.
D) independent curve.

Question 18

In Exhibit 1A-1,the slope of straight line AB is:

A) 1.
B) 5.
C) 1/2.
D) -1.

Question 19

In Exhibit 1A-1,the slope of straight line AB is:

A) positive.
B) zero.
C) negative.
D) variable.

Question 20

A line that has a different slope at each point is a:

A) curve.
B) straight line.
C) vertical line.
D) horizontal line.

Question 21

Exhibit 1A-4 Straight line

Straight line A-D in Exhibit 1A-4 shows that:

A) increasing value for X will increase the value of Y.
B) increasing value for X will decrease the value of Y.
C) increasing values for X do not affect the value of Y.
D) all of the above.

Question 22

Exhibit 1A-4 Straight line

In Exhibit 1A-4,as X increases along the horizontal axis,corresponding to points A-D on the line,the Y value remains unchanged at 40 units.The relationship between the X and Y variables is:

A) direct.
B) inverse.
C) independent.
D) undefined.

Question 23

Exhibit 1A-4 Straight line

In Exhibit 1A-4,the slope of straight line A-D is:

A) positive.
B) zero.
C) negative.
D) variable.

Question 24

Exhibit 1A-5 Straight line

In Exhibit 1A-5,as X increases along the horizontal axis,corresponding to points C-D on the line,the Y values decrease.The relationship between the X and Y variables is:

A) direct.
B) inverse.
C) independent.
D) variable.

Question 25

Exhibit 1A-6 Straight line

In Exhibit 1A-6,the slope of straight line A-D is:

A) greater than 1.
B) equal to 1.
C) less than 1.
D) zero.

Question 26

Exhibit 1A-6 Straight line

Straight line A-D in Exhibit 1A-6 shows that:

A) increasing value for X will increase the value of Y.
B) increasing value for X will decrease the value of Y.
C) increasing values for X does not affect the value of Y.
D) all of the above.

Question 27

Exhibit 1A-3 Straight line

In Exhibit 1A-3,the slope for straight line AB is:

A) 3.
B) 1.
C) -1.
D) -5.

Question 28

Exhibit 1A-5 Straight line

Straight line CD in Exhibit 1A-5 shows that:

A) increasing values for X increases the value of Y.
B) decreasing values for X decreases the value of Y.
C) there is an inverse relationship between X and Y.
D) all of the above.

Question 29

Exhibit 1A-3 Straight line

As shown in Exhibit 1A-3,the slope of straight line AB:

A) decreases with increases in X.
B) increases with increases in X.
C) increases with decreases in X.
D) remains constant with changes in X.

Question 30

Exhibit 1A-5 Straight line

As shown in Exhibit 1A-5,the slope of straight line CD:

A) decreases with increases in X.
B) increases with increases in X.
C) increases with decreases in X.
D) remains constant with changes in X.

Question 31

Exhibit 1A-6 Straight line

In Exhibit 1A-6,as X increases along the horizontal axis,corresponding to points A-D on the line,the Y values remain unchanged at 20 units.The relationship between the X and Y variables is:

A) direct.
B) inverse.
C) independent.
D) undefined.

Question 32

Exhibit 1A-5 Straight line

In Exhibit 1A-5,the slope of straight line CD is:

A) positive.
B) zero.
C) negative.
D) variable.

Question 33

Exhibit 1A-5 Straight line

In Exhibit 1A-5,the slope for straight line CD is:

A) 5.
B) 1.
C) -1.
D) -5.

Question 34

Exhibit 1A-3 Straight line

In Exhibit 1A-3,as X increases along the horizontal axis,corresponding to points A-B on the line,the Y values decrease.The relationship between the X and Y variables is:

A) direct.
B) inverse.
C) independent.
D) variable.

Question 35

Exhibit 1A-2 Straight line

In Exhibit 1A-2,the slope of straight line CD is:

A) positive.
B) zero.
C) negative.
D) variable.

Question 36

Exhibit 1A-2 Straight line

As shown in Exhibit 1A-2,the slope of straight line CD:

A) decreases with increases in X.
B) increases with increases in X.
C) increases with decreases in X.
D) remains constant with changes in X.

Question 37

Exhibit 1A-3 Straight line

Straight line AB in Exhibit 1A-3 shows that:

A) increasing values for X reduces the value of Y.
B) decreasing values for X increases the value of Y.
C) there is an inverse relationship between X and Y.
D) all of the above.

Question 38

Exhibit 1A-3 Straight line

In Exhibit 1A-3,the slope of straight line AB is:

A) positive.
B) zero.
C) negative.
D) variable.

Question 39

Exhibit 1A-4 Straight line

In Exhibit 1A-4,the slope of the straight line A-D is:

A) 0.
B) 1.
C) 1/2.
D) -1.

Question 40

Exhibit 1A-2 Straight line

In Exhibit 1A-2,the slope of straight line CD is:

A) 3.
B) 1.
C) -1.
D) 1/2.

Question 41

Exhibit 1A-8 Straight line relationship

According to the Exhibit 1A-8,the relationship between the price and quantity purchased of pizza is:

A) direct.
B) inverse.
C) complex.
D) independent.

Question 42

Exhibit 1A-6 Straight line

In Exhibit 1A-6,the slope of straight line A-D is:

A) positive.
B) zero.
C) negative.
D) variable.

Question 43

Direct relationships are illustrated using upward-sloping lines and curves.

Question 44

A downward-sloping straight line exhibits a direct relationship between two variables.

Question 45

Exhibit 1A-7 Straight line relationship

According to Exhibit 1A-7,the relationship between annual income and air-travel expenditures is:

A) direct.
B) inverse.
C) complex.
D) independent.

Question 46

An upward-sloping straight line exhibits a direct relationship between two variables.

Question 47

The graph of a direct relationship will have a positive slope.

Question 48

Exhibit 1A-6 Straight line

In Exhibit 1A-6,the slope of the straight line A-D is:

A) 0.
B) 1.
C) 1/2.
D) -1.

Question 49

A change in a third variable not on either axis of a graph is illustrated with a:

A) horizontal or vertical line.
B) movement along a curve.
C) shift of a curve.
D) point of intersection.

Question 50

If two variables are inversely related,then they change in the same direction.

Question 51

A shift in a curve represents a change in:

A) the variable on the horizontal axis.
B) the variable on the vertical axis.
C) a third variable that is not on either axis.
D) any variable that is relevant to the relationship being graphed.

Question 52

Exhibit 1A-7 Straight line relationship

What is the slope of the line shown in Exhibit 1A-7?

A) 1/20.
B) 1/10.
C) 1/5.
D) 1/2.

Question 53

Exhibit 1A-9 Multi-curve graph

Exhibit 1A-9 represents a three-variable relationship.As the annual income of consumers falls from $50,000 (line A)to $30,000 (line B),the result is a(n):

A) rightward movement along each curve.
B) leftward movement along each curve.
C) leftward shift in curve A to curve B.
D) rightward shift in curve A to curve B.

Question 54

Exhibit 1A-10 Multi-curve graph

Exhibit 1A-10 represents a three-variable relationship.As the annual income of consumers rises from $20,000 (line A)to $40,000 (line B),the result is a(n):

A) rightward movement along each curve.
B) leftward movement along each curve.
C) leftward shift in curve B to curve A.
D) leftward shift in curve A to curve B.

Question 55

A two-dimensional graph can only represent the relationship between two variables.

Question 56

In a graphic relationship,shifts in a curve are caused by a change in:

A) the slope of the curve.
B) a factor not measured on the axes of the graph.
C) one of the factors measured on either axes of the graph.
D) any factor, whether measured on the axes of the graph of not.

Question 57

Exhibit 1A-8 Straight line relationship

Which of the following would cause a shift in the relationship shown in Exhibit 1A-8?

A) A fall in household incomes.
B) A fall in the price of pizza.
C) A fall in the quantity of pizza that people wish to purchase.
D) All of the above would shift the line in the graph.

Question 58

A graph is one method of expressing a model.

Question 59

Exhibit 1A-7 Straight line relationship

Which of the following would cause a shift in the relationship shown in Exhibit 1A-7?

A) A rise in people's annual income.
B) A rise in people's expenditure on air travel.
C) A rise in the price of air travel.
D) All of the above would shift the line in the graph.

Question 60

Exhibit 1A-8 Straight line relationship

What is the slope of the line shown in Exhibit 1A-8?

A) -1.
B) -1/2.
C) -1/4.
D) 0.

Question 61

A downward-sloping line has a negative slope.

Question 62

The slope of a line is calculated as the ratio of the "rise" over the "run".

Question 63

Two variables that are inversely related tend to move in opposite directions.

Question 64

A horizontal line has an infinite slope.

Question 65

A graph can be used to illustrate the relationship between the price of compact discs and the quantity of compact discs demanded.If there is evidence that buyers' income also influences the demand for compact discs,then a movement along the curve can be caused by a change in the price of compact discs.

Question 66

A straight line or curve can shift when a factor not included on the vertical axis or horizontal axis changes.

Question 67

A horizontal line represents an independent relationship.

Question 68

Distinguish a direct and an inverse or negative relationship.Provide an example of each type of relationship.

Question 69

Graphically express a direct and an inverse or negative relationship.What could cause a shift in a line or curve expressing a relationship between two variables?