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# Chapter 9 Vocabulary

Question | Answer |
---|---|

coordinate grid | A grid formed by a horizontal line called the x-axis and the vertical line called the y-axis. |

data | Information collected about people or things, often to draw conclusions about them. |

interval | The difference between one number and the next on the scale of a graph. |

line graph | A graph that uses line segments to show how data change over time. |

line plot | A graph that shows frequency of data along a number line. |

ordered pair | A pair of numbers used to locate a point on a grid. The first number tells the left-right position and the second number tells the up-down position. |

origin | The point where the two axes of a coordinate grid intersect; (0, 0). |

scale | A series of numbers placed at fixed distances on a graph to help label the graph. |

x-axis | The horizontal number line on a coordinate plane. |

x-coordinate | The first number in an ordered pair; tells the distance to move right or left from (0, 0). |

y-axis | The vertical number line on a coordinate plane. |

y-coordinate | The second number in an ordered pair; tells the distance to move up or down from (0, 0). |