document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=702425>Question 702425</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you find the focus, directrix, and vertex of the formula : x^2+8y=0 (Parabola) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #433091 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=433091\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do you find the focus, directrix, and vertex of the formula : <BR>\n" );
document.write( "x^2+8y=0<BR>\n" );
document.write( "x^2=-8y<BR>\n" );
document.write( "This is an equation of a parabola that opens downwards.<BR>\n" );
document.write( "Its standard form: (x-h)^2=-4p(x-h), (h,k)=(x,y) coordinates of the vertex<BR>\n" );
document.write( "For given equation:x^2=-8y<BR>\n" );
document.write( "vertex: (0,0)<BR>\n" );
document.write( "axis of symmetry: x=0<BR>\n" );
document.write( "4p=8<BR>\n" );
document.write( "p=2<BR>\n" );
document.write( "focus: (0,-2) (p-distance below the vertex on the axis of symmetry)<BR>\n" );
document.write( "directrix: y=2 (p-distance above the vertex on the axis of symmetry) </SPAN>\n" );
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