document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=870783>Question 870783</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help....I cannot help my son with this question.<BR>\n" );
document.write( "What is the equation of the quadratic graph with a focus of (6,0) and a directrix of y=-10?  <BR>\n" );
document.write( "Please explain, if possible how to work this kind of a problem.  Thank you so much!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #525143 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</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=525143\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Try to use something (relatively) simple, like a parabola.  He would or should use the Distance Formula according to the definition of a parabola.  \r<BR>\n" );
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document.write( "The directrix as given, means that this directrix is the set of points (x, -10), meaning y=-10 and x is any and all real values, this is a horizontal line with the constant value of -10.\r<BR>\n" );
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document.write( "Create the equation based on this:<BR>\n" );
document.write( "The distance between the variable set of points (x,y) and F is equal to the distance between the set of points (x,-10) and the variable set of points (x,y).<BR>\n" );
document.write( "After forming this equation, simplify it until it is in a form <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=someexppressionwithx ALIGN=MIDDLE  ALT=\"y=someexppressionwithx\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Try drawing a picture or graph, because this will greatly help.  \r<BR>\n" );
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document.write( "More help possible if needed - but drawing the picture through this online system is not so easy or fast. </SPAN>\n" );
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