# Points, Vectors, and Functions

### Quizzes

1. |
Which of the following statements is true? -> The equation y = x describes ^{2}y as a function of x. |

2. |
We say y = is a function of f(x)x if -> there is only one possible y for each x. |

3. |
Which of the following functions is bounded above but not bounded below? -> |

4. |
We say a function f(x) defined on the whole real line is bounded below if -> There is a real number K such that f(x) ≤ K for all real x. |

5. |
Which of the following statements is FALSE? -> If a function is non-decreasing, that function must also be strictly increasing. |

6. |
Which of the following graphs shows a function that is non-increasing but is not strictly decreasing? -> |

7. |
Which of the following graphs shows an even function? -> |

8. |
Which of the following functions is odd? -> f(x) = x + x |

9. |
Which of the following statements is true? -> It is possible for a function to be neither even nor odd. |

10. |
Which graph shows a function that is strictly decreasing, odd, and bounded both above and below? -> B |