Question

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

Answer 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