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# Algebra Vocab

### Algebra equations

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

Radical symbol | The symbol used to represent the non negative square root of a number. |

Slope | A measure of the steepness of a line on a graph. |

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

cubed root | One of the three equal factors (multiplication) of a number. It is the side of a cube. |

Function | An input-output relationship that has exactly one output (y-value) for each input (x-value). |

intercepts | Points where a line crosses the x-axis and y-axis. |

irrational number | A number that can not be expressed as a ratio of two integers or as a repeating or terminal decimal. |

Line of best fit | A straight line that comes closest to the points on a scatter plot having an equal number of points above and below the line. |

linear equation | An equation that makes a straight line when it is graphed. |

non-linear function | A function (equation) whose graph is not a straight line. |

outlier | A value much greater or much less than the others in a set of data. |

radical symbol | The symbol used to represent the non negative square root of a number. |

rational number | A number that can be expressed as a ratio (fraction) of two integers. |

scatter plot | A graph with points plotted to show a possible relationship between two sets of data. |

scientific notation | A method of writing very large or very small numbers using powers of 10. |

slope intercept form | A linear equation written in the form y=mx+b (m represents slope and b represents the y-intercept). |

square root | One of the two equal factors (multiplication) of a number. It is the side of a square. |

Domain | The set of x-values that give rise to real y-values. |

equations | mathematical sentences built from expressions using one or more equal signs. |

evaluate | To find the value of an expression. |

exponent | Indicates how many times the base is to be used as a factor. |

formula | An expression used to calculate a desired result. |

order of operations | PEMDAS (parentheses, exponents, multiply/divide, add/subtract) |

range | The set of y-values of a function or relation |

slope | A measure of the steepness of a line on a graph |

variable | A symbol for an unknown number usually expressed as a letter |

y-intercept | A point which a graph intersects the y-axis |