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# SarahDavis PrCalc1.1

### SarahDavis rectangular coordinates & graphing utilities

term | definition |
---|---|

x-axis | horizontal number line in a coordinate plane |

y-axis | vertical number line in a coordinate plane |

origin | point of intersection of the x- and y-axes in a coordinate plane |

rectangular coordinate system | Cartesian coordinate system |

x-y plane | plane formed by the x- and y-axes |

coordinate axes | the x- and y-axes |

to plot | to place a dot at the location of a point |

abscissa | the x-coordinate |

x-coordinate | the signed distance of point P from the y-axis |

ordinate | the y-coordinate |

y-coordinate | the signed distance of point P from the x-axis |

quadrant | one of the four sections into which a coordinate plane is divided |

pixel | one of the small rectangles into which a screen is divided |

setting the range (on a calculator) | setting the scale on each axis and including the smallest and largest values of x and y to be shown in the WINDOW or viewing rectangle |

time series data | data in which a variable is measured at different points in time. It is represented graphically by line graphs |

relation | a correspondence between 2 variables, and can be written as an ordered pair |

scatter diagram | the graph resulting from plotting ordered pairs in a Cartesian coordiante system |

distance formula | sqroot[(x2-x1)^2 + (y2-y1)^2] |

midpoint formula | the ordered pair obtained by averaging the x-coordinates and the y-coordinates of the endpoints ((x1+x2)/2, (y1+y2)/2) |

Created by:
DDavis