document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=824838>Question 824838</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I find equation of a parabola given just the focus and directrix? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #496812 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=496812\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This question is a classic piece of instruction.  The directrix is a line, and the focus is a point.  The worded definition for a parabola can be stated as, the set of points in a plane equally distant from the focus and the directrix.\r<BR>\n" );
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document.write( "You would use the Distance Formula to set up your crude form equation and then simplify into a convenient form.\r<BR>\n" );
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document.write( "DO YOU HAVE SOME SPECIFIC GIVEN DATA TO BEGIN?  Do you want a parabola with a horizontal axis or one with a vertical axis? </SPAN>\n" );
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