document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1064245>Question 1064245</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A parabola has a directrix of y=-3 and a focus of (0,5). Show that the point (12,10) must lie on this parabola. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #679300 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</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=679300\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Derive the equation for the parabola using Distance Formula and the definition of a parabola.\r<BR>\n" );
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document.write( "<a  rel=nofollow HREF=\"https://www.youtube.com/watch?v=M8LGsQMwwj4\">One example</a>\r<BR>\n" );
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document.write( "<a  rel=nofollow HREF=\"https://www.youtube.com/watch?v=Wworlx39KfQ\">Another example</a>\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%281%2F16%29x%5E2%2B1 ALIGN=MIDDLE  ALT=\"y=%281%2F16%29x%5E2%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Substitute the given coordinates to test.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10=%281%2F16%29%2A12%5E2%2B1 ALIGN=MIDDLE  ALT=\"10=%281%2F16%29%2A12%5E2%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "YES. </SPAN>\n" );
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