document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1104254>Question 1104254</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write the equation of each parabola described.<BR>\n" );
document.write( "1.) Vertex at (2,5) Focus at (2,-3)<BR>\n" );
document.write( "2.) Diretrix: x= 3/4 Focus: (5/9, -3) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #718988 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=718988\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You could try to use the formula, in your example number 2 in the form<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4p%28x-h%29=%28y-k%29%5E2 ALIGN=MIDDLE  ALT=\"-4p%28x-h%29=%28y-k%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > for vertex (h,k), and p the distance from vertex to either focus or directrix.\r<BR>\n" );
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document.write( "Vertex for #2 is  (47/72, -3), and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=abs%285%2F9-47%2F72%29=7%2F72 ALIGN=MIDDLE  ALT=\"p=abs%285%2F9-47%2F72%29=7%2F72\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "The basic formula will then give you  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28-4%287%2F72%29%28x-47%2F72%29=%28y%2B3%29%5E2%29 ALIGN=MIDDLE  ALT=\"highlight_green%28-4%287%2F72%29%28x-47%2F72%29=%28y%2B3%29%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, which you can simplify on the left hand side.\r<BR>\n" );
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document.write( "You really should learn how to use the parabola definition to derive the equations, and also learn to use the resulting formula.<BR>\n" );
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