document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=871809>Question 871809</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an equation for the parabola, that has its vertex at the origin and directrix y = 6.\r<BR>\n" );
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document.write( "I am still so confused by this.  Please can someone explain this. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #525740 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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/cgi-bin/show-face.mpl?user=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=525740\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> vertex at the origin and directrix y = 6.<BR>\n" );
document.write( "Directrix is above the vertex, Parabola Opens Downward*** a < 0<BR>\n" );
document.write( " y = ax^2  and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+1%2F4p ALIGN=MIDDLE  ALT=\"a+=+1%2F4p\"   DISABLED_style= \"max-width:90%; height:auto;\" >, p = 6, 4p = 24, a = -1/24<BR>\n" );
document.write( "y = -(1/24)x^2.  </SPAN>\n" );
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