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# LHS Algebra 1 C1

### LHS Algebra 1 C1 Expressions, Equations, and Functions

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

coordinate system | The grid formed by the intersection of two number lines, the horizontal axis and the vertical axis. |

coordinate plane | The plane containing the x- and y-axes. |

x-axis | The horizontal number line on a coordinate plane. |

y-axis | The vertical number line on a coordinate plane. |

origin | The point where the two axes intersect at their zero points |

ordered pair | 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 of the ordered pairs in a relation. |

range | The set of second numbers of the ordered pairs in a relation. |

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. |

function | A relation in which each element of the domain is paired with exactly one element in the range. (no repeating x's) |

discrete function | A function of 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 in a relation, then the relation is a function. |

function notation | A way to name a function that is defined by an equation. 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. |

Created by:
shelley.wirtz