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Mathematics 13 Online
OpenStudy (anonymous):

write an equation for the parabola whose vertex is at (4,9) and which passes through (4,4). a. y=-3(x+3)^2-7 b. y=-3(x-3)^2+7 c. y=(x+3)^2-7 d. y=3(x-3)^2+7

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