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# unit 4: one step

### unit 4: one step equations and inequalities

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

Addition Property of Equality | Adding the same number to each side of an equation produces an equivalent expression. |

Constant of proportionality | The constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the constant of proportionality. |

Direct Proportion (Direct Variation) | The relation between two quantities whose ratio remains constant. When one variable increases the other increases proportionally. |

Division Property of Equality | States that when both sides of an equation are divided by the same number, the remaining expressions are still equal. |

Equation | A mathematical sentence that contains an equal sign. |

Inequality | A mathematical sentence that contains the symbols >, <, ≥, or ≤. |

Inverse Operation | A mathematical process that combines two or more numbers such that its product or sum equals the identity. |

Multiplication Property of Equality | States that when both sides of an equation are multiplied by the same number, the remaining expressions are still equal. |

Proportion | An equation which states that two ratios are equal. |

Subtraction Property of Equality | States that when both sides of an equation have the same number subtracted from them, the remaining expressions are still equal. |

Term | A number, a variable, or a product of numbers and variables. |

Variable | A letter or symbol used to represent a number or quantities that vary. |

Created by:
mcrippen