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Mathematics 14 Online
OpenStudy (vera_ewing):

Tony is trying to find the equation of a quadratic that has a focus of (–1, 4) and a directrix of y = 8. Describe to Tony your preferred method for deriving the equation. Make sure you use Tony's situation as a model to help him understand.

OpenStudy (vera_ewing):

@AlexandervonHumboldt2

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