A | B |

linear graph | Any graph that is a straight line |

Function | There is only one value of y for each value of x |

Control variable | The independent variable, usually x |

Dependent variable | Depends on control variable, usually y |

Growth graph | A graph which is increasing throughout |

Decay graph | A graph which is decreasing throughout |

Constant graph | A graph which is linear and horizontal |

Domain | All the values of the control variable (x) |

Range | All the values of the dependent variable (y) |

Nonlinear graph | A graph which is not a straight line |

Slope | Rise/run or The change in y over the change in x |

Vertical intercept | Where the line crosses the y-axis |

Direct Variation | An equation in the form y = kx |

Constant of Variation | In a direct variation, y = kx, k is the constant of variation |

Systems of equations | Two or more equations that have relationships between x and y |

Solution of a system | An ordered pair that makes both equations true. |

Consistent system | A system that has one or more solutions |

Inconsistent system | A system that has no solutions |

Matrix | An arrangement of numbers in rows and columns |

Elements of the matrix | One of the numbers of the matrix |

Dimensions of a matrix | The number of rows and columns, in that order, of the matrix |

The identity matrix | 1 0 0 1 |

Inverse matrix | two matrices whose product is the identity matrix |

Slope-intercept form | y = mx + b |

Point-slope form | y = m(x - x ) + y |