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OpenStudy (anonymous):
Find the focus, directix, and focal diameter of the parabola, and sketch its graph.
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OpenStudy (anonymous):
What is the function?
OpenStudy (anonymous):
x^2 =9y
OpenStudy (anonymous):
parabola focus | (0, 9/4) vertex | (0, 0) semi-axis length | 9/4~~2.25 focal parameter | 9/2~~4.5 eccentricity | 1 directrix | y = -9/4
OpenStudy (anonymous):
how did you figure all of that out
OpenStudy (anonymous):
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