document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=329448>Question 329448</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you show me how to get the equation of a parabola with a focus (17,9) and a directrix x=12? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #236139 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=236139\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Can you show me how to get the equation of <BR>\n" );
document.write( "a parabola with a focus (17,9) and a directrix x=12.<BR>\n" );
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document.write( "Draw the picture of the line and and the point.<BR>\n" );
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document.write( "The vertex is half way between at (19.5, 9)<BR>\n" );
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document.write( "p is the distance from the vertex to the focus = 2.5<BR>\n" );
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document.write( "Form: (y-k)^2 = 4p(x-h)<BR>\n" );
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document.write( "(y-9)^2 = 8(x-(39/2))<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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