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# chapter 2 review

Term | Definition |
---|---|

absolute value function- a function of the form f(x) = |mx+b| + c | a function of the form f(x) = |mx+b| + c |

dependent variable | the value of y depends on the value of x |

direct variation | A linear function defined by an equation of the form y= kx, where k= 0 |

domain | of a relation is the set of all inputs, or x- coordinates of the ordered pairs |

function | is a relation in which each element of the domain is paired with exactly one element in the range |

function notation | f of x |

independent variable | because the value of y depends on the value of x |

linear equation | y=3x + 2 |

linear function | A function whose graph is a line |

linear inequality | is an inequality in two variables whose graph is region of the coordinate plane that is bounded by a line |

mapping diagram | which links elements of the domain with corresponding elements of the range |

parent function | is the simplest function with these characteristics |

point-slope-function | y -- y1 = m(x- x1) |

range | of the relation is the set of all outputs, or - coordinates of the ordered pairs |

reflection | in the x- axis changes y- values to their opposites |

relation | is a set of pairs of input and output values |

scatter plot | is a graph that relates two different sets of data by plotting the data as ordered pairs |

shrink | reduces y-values by a factor between 0 and 1 |

slope | of a non vertical line is the ratio of the vertical change to a corresponding horizontal change |

slope |

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