# Test Bank For ECON Macroeconomics 1st Edition By William A. McEachern

**ISBN-10: 0324587805, ISBN-13: 9780324587807**

**Chapter 1 Appendix—Understanding Graphs**

**MULTIPLE CHOICE**

**Exhibit 1-1**

- 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

- 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

- 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

- 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

- 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