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OpenStudy (anonymous):
Can someone check this please Identify the focus and directrix of the parabola: y = -4x 2 - 3. MY ANSWERS focus = (0, -4) directrix: y = -2
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OpenStudy (amistre64):
|dw:1367245728915:dw| this is one idea i have for this, since i can never really recall which side to put the 4a on :/
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