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# Chapter 2

### Algebra I Vocabulary

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

Formula | a rule that states the relationship between 2 or more quantities. |

consecutive integers | 2 or more integers in counting order (example: 4,5,6) |

number theory | the study of numbers and the relationship between them. |

identities | equations that are true for all values of the variable |

absolute value | the distance a number is from zero on a number line |

ratio | a comparison of two numbers by division |

proportion | an equation stating that two ratios are equal. |

means | the middle terms in a proportion |

extremes | the outer terms in a proportion |

rate | a ratio that compares two quantities with different units of measure |

unit rate | compares a certain number of one item to just one of another item |

scale model | a 3D reproduction that has been reduced or enlarged proportionally |

percentage of change | difference/original |

literal equation | a formula that involves several variables |

unit analysis | the process of carrying units throughout a computation |

weighted average | the sum of the product of the number of units and the value per unit divided by the sum of the number of units |

mixture problems | situations where two or more parts are combined into a whole |

rate problems | situations in which objects move at a certain speed |

Created by:
CLOP