__ | 11. | axes | | A. | A real number that can be written as a ratio of two integers |

__ | 12. | coordinate plane | | B. | The horizontal (flat) line on a coordinate plane |

__ | 13. | irrational/non-rational number | | C. | the intersection of the x and y axes; (0,0) on a graph |

__ | 14. | negative slope | | D. | A real number that cannot be written as a fraction |

__ | 15. | origin | | E. | the graph of a line/equation that slants down left to right |

__ | 16. | positive slope | | F. | one of the four regions formed on a coordinate plane |

__ | 17. | quadrant | | G. | a plane with a horizontal (x) and vertical (y) number |

__ | 18. | rational number | | H. | The vertical (standing upright) line on a coordinate plane |

__ | 19. | x-axis | | I. | the graph of a line that slopes up from left to right |

__ | 20. | y-axis | | J. | plural of axis |