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# Mr. Edwards 1

### Basic Algebra Vocabulary

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

Algebra | A math that uses numbers and variables to represent relationships and has rules to solve for the unknown or changing amounts represented by the variables. |

Whole Number | O, 1, 2, 3.... The positive numbers and zero with no fractions or decimals. |

Natural or Counting Numbers | 1, 2, 3... The positive numbers with no fractions or decimals. |

Integers | ...-3, -2, -1, 0, 1, 2, 3... The positive and negative whole numbers. |

Real Numbers | All positive and negative numbers including all decimals and fractions. |

Rational Numbers | All positive and negative numbers except non-terminating, non-repeating decimals. |

Irrational Numbers | Non-terminating, non-repeating decimals. |

x-axis | The horizontal line on a coordintate plane. It shows the x values. |

y-axis | The vertical line on a coordinate plane. It shows the y values. |

y-intercept | Where a function hits the y axis. |

x-intercept | Where a function hits the x axis. (Also called zeroes or roots.) |

Function | A set of ordered pairs where every x value has only one y value. In a graph any vertical line will only hit the graph once. |

Relation | Any set of ordered pairs. |

Zeroes | In an equation, the values that make the function equal zero. On the graph, where the function hits the x-axis. (Also called the roots.) |

Expression | A statement in math that does not have an equal sign or an inequality sign. Example: 2x^3+4x+2 or 3(4x+2). |

Equation | A math statement that says one expression is equal to another. Ex: 3x+4=3 |

Inequality | A statement in math that says one expression is greater than or less than another expression. Ex: 2x > 3 |

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meminot