Directrix Parabolas

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5 Terms

1
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<p>opens right</p>

opens right

y²=4ax

2
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<p>opens left</p>

opens left

y²=-4ax

3
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<p>opens up</p>

opens up

x²=4ay

4
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<p>opens down</p>

opens down

x²=-4ay

5
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p

distance from the vertex to the focus or directrix

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