# Algebra 1-6

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2017-09-27 02:07

## Section 1

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

Coordinate system | the grid formed by the intersection of 2 number lines, the horizontal axis and the vertiical axis |

Coordinate plane | the plane containing the x and y axis |

X- axis | the horizontal number line on the coordinate plane |

Y- axis | the vertical number line on the coordinate plane |

Origin | the point where the two axes intersect at the zero point |

Ordered pairs | A set of numbers or coordinates used to locate any point on a coordinate plane, written in the form (x,y) |

X- coordinate | the first number in an ordered pair |

Y- coordinate | the second number in an ordered pair |

Relation | A set of ordered pairs |

Mapping | Illustrates how each element of the domain is paired with an element in the range |

Domain | the set of the first numbers (x- coordinate) of the ordered pairs in a relation. D={ } |

Range | the set of second numbers ( y- coordinates) of the ordered pairs in a relation. R={ } |

Independent variable | the variable in a function with a value that is subject to choice |

Dependent variable | the variable in a relation with a value that depends on the value of the independent variable |

RELATIONS REPRESENTED IN 4 WAYS | table, coordinate plane, map, set of ordered pairs |

## Section 2

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

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

Discrete function | a function of the points that are not connected |

Continuous function | a function that can be graphed with a line or a smooth curve |

Vertical line test | if any vertical line passes through no more than one point of the graph of a relation, then the relation is a function |

Function notation | a way to name a function that is defined by an equation. In function notation, the equation y=3x-8 is written as f(x)= 3x-8 |

Nonlinear function | a function with a graph that is not a straight line |

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