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OpenStudy (anonymous):
help PLEASE!!!!! find the vertex, focus, and the directrix of the parabola and sketch its graph. x+y^2=0
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OpenStudy (mertsj):
So this one is y^2=-4px Which way does it open?
OpenStudy (anonymous):
down. but wait, how do u know to use that particular equation?
OpenStudy (mertsj):
x^2=4py opens up x^2=-4py opens down y2=4px opens to the right y^2=-4px opens to the left Which way does this one open?
OpenStudy (anonymous):
down and to the left?
OpenStudy (mertsj):
It can't be both. You have 4 choices. up, down, right, or left. Pick one
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OpenStudy (anonymous):
opens to the left?
OpenStudy (mertsj):
|dw:1337914636126:dw|
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