a>0
a<0 |
graph opens up
graph opens down |

b^{2} - 4ac > 0
b b |
Graph has 2 x-intercepts
Graph has 1 x-intercept Graph has no x-intercepts |

Vertex Point | at x = -b/2a
to find y substitute above value for x |

x-intercepts | factor or use quadratic formula |

y-intercept | c value in ax^{2} + bx + c |