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# Algebra 1 Chapter 1

### McDougal Littell

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

A letter that is used to represent one or more numbers | variable |

The numbers represented by variables | values |

A collection of numbers, variables, and operations. | variable expression |

To find the value of an expression by replacing each variable by a number. | evaluating the expression |

Writing the units of each variable in a real-life problem to help determine the units for the answer. | unit analysis |

An expression that uses words to represent a real-life situation. | verbal model |

The result of a repeated multiplication | power |

The number of variable that represents the number orf times the base is used as a factor. | exponent |

The number of variable that is used as a factor in repeated multiplication | base |

Symbols such as parentheses or brackets that indicate the order in which operations should be preformed. | grouping symbols |

The rules established to evaluate an expression involving more than one operation. | order of operations |

A statement formed when an equal sign is placed between two expressions. | equation |

An equation that contains one or more variables. | open sentence |

A number that, when subnstituted for the variable in an equation, results in a true statement. | solution of an equation |

Finding all the solutions of an equation. | solving the equation |

A sentence formed when an inequality symbol is placed between two expressions. | inequality |

A number that, when substituted for the variable in an inequality, results in a true statement. | solution of an inequality |

Writing algebraic expressions, equations, or inequalities that represent real-life situations. | modeling |

An expression, equation, or inequality that represents a real-life situation. | mathematical model |

Information, facts, or numbers used to describe something. | data |

A graph that organizes a collection of data by using horizontal or vertical bars to display how many times each event or number occurs in the collection. | bar graph |

A graph that uses line segments to connect data points. It is especially useful for showing changes in data over time. | line graph |

A rule that establishes a relationship between two quantities, called the input and the output. For each input, there is exactly one output. | function |

A table used to describe a function by listing the inputs and outputs. | input-output table |

The collection of all input values of a function. | domain |

The collection of all output values of a function. | range |

Created by:
dhmahlman