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# Algebra Chapter 4

### Algebra Chapter 4 Functions

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

continuous graph | a graph made up of connected lines or curves |

discrete graph | A graph made up of unconnected points |

relation | A set of ordered pairs |

domain | The set of all possible input values of a function or relation |

range | The set of output values of a function or relation |

function | A relation in which every input is paired with exactly one output. |

independent variable | The input of a function; a variable whose value determines the value of the output. |

dependent variable | The output of a function; a variable whose value depend on the value of the input. |

function rule | An algebraic expression that defines a function. |

function notation | If x is the independent variable and y is the dependent variable, then f(x) is the function notation. |

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

correlation | A measure of the strength and direction of the relationship between two variables or data sets. |

positive correlation | Two data sets have a positive correlation if both sets of data values increase. |

negative correlation | Two data sets have a negative correlation if one set of data values increase as the other set decreases. |

no correlation | Two data sets have no correlation if there is no relationship between the sets of values. |

trend line | A line on a scatter plot that helps show the correlation between data sets more clearly. |

sequence | A list of numbers that often form a pattern. |

term | An element or number in a sequence. |

arithmetic sequence | A sequence whose successive terms differ by the same nonzero number d, called the common difference. |

common difference | In an arithmetic sequence, the nonzero common difference of any term and the previous term. |

formula to find the nth term of an arithmetic sequence | a(n) = a(1) + (n - 1)d |

Created by:
galbreath01