Question 1

Exhibit 1-1

-Point a in Exhibit 1-1 represents

Accepted Answer

A)  the origin
B)  x = 0, y = 50
C)  x = 50, y = 0
D)  x + y = 50
E)  y = 0; no information is given about xF) C) and D)
G) B) and D)

Question 2

Exhibit 1-8  
-The slope of a horizontal line is

Accepted Answer

A)  infinitely large
B)  zero
C)  positive
D)  negative
E)  infinitely smallF) D) and E)
G) B) and C)

Question 3

Exhibit 1-1

-In Exhibit 1-1, point c represents

Accepted Answer

A)  x = 30, y = 60
B)  x = 60, y = 30
C)  c = 90
D)  x + y = 60
E)  x + y = 30F) B) and E)
G) B) and C)

Question 4

Exhibit 1-12  
-The slope of the line in Exhibit 1-10 is

Accepted Answer

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

Question 5

A graph is a

Accepted Answer

A)  lengthy, inefficient, and inconvenient way to illustrate information
B)  diagram illustrating a relationship between variables
C)  method of proving causation
D)  tool for incorporating all major and minor variables in one illustration
E)  clear way to see how the fallacy of composition worksF) C) and E)
G) None of the above

Question 6

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

Accepted Answer

A)  positive; constant
B)  positive; changing
C)  negative; constant
D)  negative; changing
E)  changing; constantF) All of the above
G) C) and D)

Question 7

Exhibit 1-2  
-In Exhibit 1-2, at x = 10, 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 positiveF) B) and E)
G) A) and B)

Question 8

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 = 90F) A) and B)
G) A) and E)

Question 9

A functional relationship exists between two variables if the value of one variable depends on the value of the other variable.

Accepted Answer

A) True 
 B)False

Question 10

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 informationF) A) and E)
G) None of the above

Question 11

Exhibit 1-14  
-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 unrelatedF) A) and B)
G) C) and E)

Question 12

The slope of a U-shaped curve is infinity at the bottom of the U.

Accepted Answer

A) True 
 B)False

Question 13

Any point on a graph represents a combination of particular values of two variables.

Accepted Answer

A) True 
 B)False

Question 14

The slope of an inverted U-shaped curve is infinity at the top of the curve.

Accepted Answer

A) True 
 B)False

Question 15

Exhibit 1-16      
-Refer to exhibit 1-16. Which of the graphs illustrates no relationship between variable X and variable Y?

Accepted Answer

A)  a
B)  b
C)  c
D)  d
E)  eF) A) and B)
G) A) and E)

Question 16

Exhibit 1-8  
-The slope of a vertical line is

Accepted Answer

A)  infinitely large
B)  zero
C)  positive
D)  negative
E)  infinitely smallF) D) and E)
G) A) and D)

Question 17

The statement that there is a direct relation between x and y means that

Accepted Answer

A)  x and y move in the same direction
B)  x causes y
C)  y causes x
D)  either y causes x or x causes y
E)  the causal connection between x and y is immediateF) B) and E)
G) A) and D)

Question 18

A straight line tangent to a curved line at a point

Accepted Answer

A)  crosses the curved line at that point
B)  crosses the curved line at many points
C)  has the same slope as the curved line at that point
D)  is steeper than the curve at all other points
E)  has a smaller slope than all other points on the curveF) C) and E)
G) A) and C)

Question 19

Exhibit 1-13  
-Compare the slopes of the tangents at points a and b in Exhibit 1-11. Which of the following statements is true?

Accepted Answer

A)   The slope at a is positive, and the slope at b is negative.
B)   The slope at a is negative, and the slope at b is positive.
C)   The slope is positive at both a and b.
D)   The slope is negative at both a and b.
E)   The slope at a is equal to the slope at b.F) A) and E)
G) A) and D)

Question 20

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

Exam 22:Understanding Graphs

The slope of an inverted U-shaped curve is infinity at the top of the curve.

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The statement that there is a direct relation between x and y means that

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Exhibit 1-14 -A line on a graph will shift if

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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.

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

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A graph is a

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Exhibit 1-16 -Refer to exhibit 1-16. Which of the graphs illustrates no relationship between variable X and variable Y?

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

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

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Exhibit 1-12 -The slope of the line in Exhibit 1-10 is

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A straight line tangent to a curved line at a point

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Exhibit 1-1 -In Exhibit 1-1, point c represents

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The slope of a U-shaped curve is infinity at the bottom of the U.

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Exhibit 1-8 -The slope of a vertical line is

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Exhibit 1-13 -Compare the slopes of the tangents at points a and b in Exhibit 1-11. Which of the following statements is true?

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A functional relationship exists between two variables if the value of one variable depends on the value of the other variable.

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

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Any point on a graph represents a combination of particular values of two variables.

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Exhibit 1-8 -The slope of a horizontal line is

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Exhibit 1-1 -Point a in Exhibit 1-1 represents

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

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