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# Algebra 1 Chapter 3

### Mc Dougal Littell

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

Equivalent Equations | Equations with the same solutions as the original equation. |

Inverse Operations | Operations that undo each other, such as addition and subtraction. |

Solution Step | The result of applying a transformation to an equation when solving the equation. |

Linear Equation in one variable | An equation in which the variable is raised to the first power and does not occur in a denominator, inside a square root symbol, or inside an absolute value symbol. |

Properties of equality | The rules of algebra used to transform equations into equivalent equations. |

Ratio of a to b | The relationship a/b of two quantities a and b that are measured in the same unit. |

Similar Triangles | Two triangles are similar if they have equal corresponding angles. |

Idenity | An equation that is true for all values of the variables. |

Round-off error | The error produced when a decimal result is rounded in order to provide a meaningful answer. |

Formula | An algebraic equation that relates two or more real-life quantities. |

Rate of a per b | The relationship a/b of two quantities a and b that are measured in different units. |

Unit Rate | A rate per one given unit. |