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# Chapter 8 Math Vocab

### Graphing Quadratic Functions

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

Quadratic Function | a nonlinear function that can be written in the standard form y=ax^2+bx+c, where a is not equal to 0 |

Parabola | the u-shaped graph of a quadratic fuction |

Vertex | the lowest or highest point on a parabola |

Axis of Symmetry | the vertical line that divides a parabola into two symmetric parts |

Focus | a fixed point on the interior of a parabola that lines on the axis of symmetry; a parabola "wraps" around the focus |

Zero | an x-value for which f(x) =0; located at the x-intercept of the graph of the function |

Minimum Value | the y-coordinate of the vertex of the graph of y=ax^2+bx+c when a>0 |

Maximum Value | the y-coordinate of the vertex of the graph of y=ax^2+bx+c when a<0 |

Vertex Form | a quadratic function of the form y=a(x-h)^2+k, where a is not equal to 0. the vertex of the parabola is (h,k) |

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raquelleangelique