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# unit7:rational

### Unit 7: Rational Explorations: Numbers and their Opposites

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

Absolute value | The distance between a number and zero on the number line. The symbol for absolute value is shown in the equation |-8|=8. |

Coordinates | An ordered pair, (x,y), that locates a point in a plane. |

Inequality | Any mathematical sentence that contains the symbols > (greater than), < (less than), < (less than or equal to), or > (greater than or equal to). |

Integers | The set of whole numbers and their opposites {…-3,-2,-1,0,1,2,3,…} |

Negative numbers | The set of numbers less than zero |

Opposite number | Two different numbers that have the same absolute value. Example |

Ordered Pair | A pair of numbers, (x,y), that indicate the position of a point on the Cartesian Plane. |

Origin | The point of intersection of the vertical and horizontal axes of a Cartesian plane. The coordinates of the origin are (0, 0). |

Positive number | The set of numbers greater than zero. |

Rational number | The set of numbers that can be written in the form a/b where a and b are integers and b≠0. |

Sign | a symbol that indicates whether a number is positive or negative. Example |

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

x-coordinate | The first number of in ordered pair; the position of a point relative to the vertical axis |

y-axis | The vertical number line on the Cartesian coordinate plane |

y-coordinate | The second number in an ordered pair; the position of a point relative to the horizontal axis |

Created by:
mcrippen