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# PreAlg - Chap. 1

### Pre Algebra Chapter 1 Mrs. Bradfield

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

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

constant | a value that does not change |

evaluate | to find the value of a numerical or algebraic expression. |

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

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

variable | a symbol used to represent a quantity that can change |

addition property of equality | if you add the same number to both sides of an equation, the solution is the same |

equation | a mathematical sentence stating that two expressions are equivalent. |

inverse operations | operations that undo each other |

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

solution | a value or values that make an equation or inequality true |

solve | to find an answer or a solution |

inequality | a mathematical sentence stating the relationship between quantities that are not equivalent |

like terms | two or more terms that have the same variable raised to the same power |

simplify | to perform all possible operations, including combining like terms |

term | the parts of an expression that are added or subtracted |

ordered pair | a pair of numbers that can be used to locate a point on a coordinate plane |

coordinate plane | a plane formed by the intersection of a horizontal (x) and a vertical (y) axis. |

graph of equation | a graph of the set of ordered pairs that are solutions of the equation |

origin | the point where the x-axis and the y-axis intersect in the coordinate plane. |

x-axis | the horizontal axis on a coordinate plane |

x-coordinate | the first number in an ordered pair; it tells the distance to move right or left fom the origin |

y-axis | the vertical axis on a coordinate plane |

y-coordinate | the second number in an ordered pair; it tells the distance to move up or down from the origin |

Created by:
alissa2222