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Mathematics, 27.08.2021 05:20 bangtann77
Find the equation of a parabola with a focus of (0, 9) and directrix y = β9.
A. Y= - 1/9x^2
B. Y= 1/36x^2
C. Y= - 1/36^2
D. Y= 1/9^2
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Find the equation of a parabola with a focus of (0, 9) and directrix y = β9.
A. Y= - 1/9x^2
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