precalculus

Find the focus, directrix, and focal diameter of the parabola.
9x + 7y2 = 0
my answers were
focus = -9/28,0
fd =9/7
directrix= -9/28 (this ans. is incorrect) what am I missing? pls help

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asked by amaa
  1. Well, what do you know ...

    your problem is actually on its own webpage

    http://www.algebra.com/algebra/homework/Quadratic-relations-and-conic-sections/Quadratic-relations-and-conic-sections.faq.question.314229.html

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    posted by Reiny

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