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# Math Vocab.

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

Expression | a number sentence using unknown variables |

Order of Operations | the rules to follow when more than one operation is used in an expression |

Parenthesis | symbols used in math that tells you to solve that part of the equation first |

Proportion | an equation that shows two ratios are equal or equilateral |

Reasonable | an answer that seems sensible as the solution to the problem |

Simplifying an Expression | using math properties to combine things that are alike |

Constant | a value that does not change |

Equivalent Ratio | ratios that name the same comparison |

Rate | a rate that compares two quantities measures in different units |

Rate of Change | a ratio that compares the amount of change in a dependent variable to the amount of change in an independent variable |

Ratios | a comparison of two quantities by division |

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

Constant of Proportionality | a constant of two variables related proportionally |

Constant of Variation | the constant k in direct and inverse variation equations |

Direct Variation | a linear relationship between two variables x and y that can be written in the form y=kx where k is a nonzero constant |

Proportional Relationship | a relationship between two quantites of the ratio of one quantity in which another quantity is constant |

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