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# unit 2

### unit 2 Relations and Funcions

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

Relation | A set of ordered pairs |

function | A relation for which each element of the domain corresponds to exactly one element of the range |

independent variable | A variable in an equation that may have its value freely chosen without considering values of any other variable |

Dependent variable | A variable that depends on one or more other variables |

Input | the y-value |

Output | the x-value |

Domain | The set of values of the independent variable(s) for which a function or relation |

Range | The set of y-values of a function or relation |

Vertical Line Test | A test use to determine if a relation is a function |

Coordinate plane | The plane formed by a horizontal axis and a vertical axis, often labeled the x-axis and y-axis |

Evaluate | explanation of how you did something |

Function Notation | Function notation is a way to name a function that is defined by an equation |

Linear | Like a line. A description of any graph or data that can be modeled |

Common Difference | The difference between each number in an arithmetic sequence. |

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82josmac