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# chapter 2 review

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

absolute value function | a function of the form f(x)=|mx +b|+c, where m 0 |

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

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

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

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

function notation | f(x) as "f of x "or "a function f of x" |

independent variable | if a function is defined by an equation using the variables x and y, where x represents input values , then x is the independent variable |

linear equation | a linear equation in two variables is an equation that can be written in the form ax+by =c |

linear function | a function whose graph is a line is a linear function. you can represent a linear function with a linear equation |

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

parallel lines | |

perpendicular lines |