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# Unit 3 vocab

### Linear Equations and Functions

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

direct variation | mathematical relationship between two variables that can be expressed by an equation in which one variable is equal to a constant times the other |

linear equation | an equation between two variables that gives a straight line when plotted on a graph. |

point-slope form | Point slope form is also called as point - gradient form. Point Slope Form is used to generate the Equation of a straight line passing through a given point with a slope. |

slope-intercept form | A linear equation is an algebraic equation in which each term is either a constant or the product of a constant and a single variable. |

rate of change | The ratio of the change in the output value and change in the input value of a function |

slope | a measure of the steepness of a line on a graph; the rise divided by the run |

x-intercept | the x-coordinate of the point where the graph of a lime crosses the x-axis |

y-intercept | the y-coordinate of the point where the graph of a line crosses the y-axis |

unit rate | a rate in which the second quantity in the comparison is one unit. |

proportional relationship | a relationship between inputs to outputs in which the ratio of inputs and outputs is always the same. |

intersecting lines | lines that cross at exactly one point |

constant of proportionality | a constant ratio of two variables related proportionally. |

Created by:
Joshuaq99