Glossary | |

constant | the characteristics or elements that remain the same |

coordinate | one of a set of numbers used to identify the location of a point on a graph |

dependent variable | a variable in an equation with a value that is determined by mathematical operations on other variable and constant values in the same equation |

graph | a visual representation of a relationship between variables |

independent variable | a variable in an equation that is assigned a value rather than having a value that is determined by mathematical operations on other parts of the same equation |

maximum point |
point on the curve with the highest y-coordinate and a
slope of zero |

minimum point |
point on the curve with the lowest y-coordinate and a
slope of zero |

negative slope | the line is sloping down to the right, the slope is negative (-) |

origin | the point where the two axes intersect. The origin is also identified as the point (0, 0). |

point of tangency | the point where the curve and the tangent meet |

point |
the basic relationship displayed on a graph. Each point is defined
by a pair of numbers containing two coordinates. Each point is
identified by both an x and a y coordinate. |

positive slope | the line is sloping up to the right, the slope is positive (+) |

slope |
how much one variable ( |

tangent | a straight line that touches a curve at a single point and does not cross through it |

variable | the generic term for any characteristic or element that changes |

x-coordinate |
the value that tells you how far from the origin the point is
on the horizontal, or x-axis |

y-coordinate |
the value that tells you how far from the origin the point is
on the vertical, or y-axis |

y-intercept |
the point at which the line crosses the y-axis. The y-intercept
is the value of y when x is equal to zero. |

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