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# Chapter 1 Vocab

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

variable | a symbol, usually a letter that represents one or more numbers |

coefficient | the number that is multiplied by the variable in an algebraic expression |

expression | a mathematical phrase containing numbers, operations, and/or variables |

constant term | a term that has numbers but no variable |

Evaluate (an algebraic expression) | substitute a number for each variable in an algebraic expression. Then use the order of operations to find the value of the numerical expression |

substitute | to replace a variable with a number or another expression in an algebraic expression |

equation | a mathematical sentence that uses and equal sign to show that two expressions are equal |

solve | to find an answer or a solution |

solution of an equation | a value that makes an equation true |

inverse operation | operations that “undo” each other, such as addition and subtraction or multiplication and division |

isolate the variable | to get a variable alone on one side of an equation or inequality in order to solve the equation or inequality |

like terms | terms that have identical variable parts |

equivalent expression | expressions with the same value |

simplify | to write a fraction or expression in simplest form |

distributive property | to multiply a sum or difference by a number, multiply each number in a sum or difference by the number outside the parentheses. |

order of operations | the order in which to perform operations when evaluating expressions with more than one operation |

ordered pair | a pair of numbers used to locate a point in a coordinate plane. The first number is the x-coordinate and the second number is the y-coordinate |

integers | the set of whole numbers and their opposites |

absolute value | the distance between a number and 0 on a number line. The absolute value of a number a is written as |a|. |

Created by:
Shanira T