1. In Exhibit 1-1, point c represents
a. x = 30, y = 60
b. x = 60, y = 30
c. c = 90
d. x + y = 60
e. x + y = 30
ANS: B PTS: 1 DIF: Easy NAT: Analytic
LOC: Understanding and applying economic models TOP: Understanding Graphs
2. Point b in Exhibit 1-1 represents
a. x = 30, y = 60
b. x = 60, y = 30
c. x + y = 60
d. x + y = 30
e. b = 90
ANS: A PTS: 1 DIF: Easy NAT: Analytic
LOC: Understanding and applying economic models TOP: Understanding Graphs
3. Point a in Exhibit 1-1 represents
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 x
ANS: B PTS: 1 DIF: Easy NAT: Analytic
LOC: Understanding and applying economic models TOP: Understanding Graphs
1
,4. On a graph with x on the horizontal axis and y on the vertical axis, the origin is
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
ANS: A PTS: 1 DIF: Easy NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
5. If a given value of x is associated with a particular value of y,
a. then x causes y
b. then y causes x
c. then x and y must be logically connected
d. there are no other variables that affect the value of y
e. there may be no causal relationship between x and y
ANS: E PTS: 1 DIF: Moderate NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
6. If x causes y, then
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
ANS: B PTS: 1 DIF: Hard NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
7. 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?
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.
ANS: D PTS: 1 DIF: Hard NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
Exhibit 1-2
2 Chapter 1
This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold,
copied, or distributed without the prior consent of the publisher.
, 8. In Exhibit 1-2, at x = 10, the
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
ANS: C PTS: 1 DIF: Moderate NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
9. In Exhibit 1-2, at x = 8, the
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
ANS: B PTS: 1 DIF: Moderate NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
10. In Exhibit 1-2, at x = 12, the
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
ANS: A PTS: 1 DIF: Moderate NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
11. In Exhibit 1-2, at y = 10, the
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
ANS: B PTS: 1 DIF: Moderate NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
12. In Exhibit 1-2, at y = 14, the
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
ANS: A PTS: 1 DIF: Moderate NAT: Reflective Thinking
LOC: Understanding and applying economic models TOP: Understanding Graphs
Appendix—Understanding Graphs 3
This edition is intended for use outside of the U.S. only, with content that may be different from the U.S. Edition. This may not be resold,
copied, or distributed without the prior consent of the publisher.
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