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# Grade 8 Chapter 4

### Functions

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

arithmetic sequence | a sequence whose successive terms differ by the common difference |

common difference | the nonzero constant difference of any term and previous term |

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

correlation | a measure of the strength and direction of the relationship between variables |

dependent variable | output of a function |

discrete graph | a graph made up of unconnected points |

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

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

function notation | “f of x” where f names the function |

function rule | a algebraic expression that defines a function |

independent variable | the input of a function |

negative correlation | one set of data values increases and the other set decreases |

no correlation | there is no relation between the set of values |

positive correlation | both sets of data values increase |

range | the set of all possible output values of a relation or function |

relation | a set if ordered pairs |

scatter plot | a graph with points plotted to show a possible relationship between 2 data sets |

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

term | each number in a sequence |

trend line | a line on a scatter plot that show the correlation between the data sets |

Created by:
bookannelid