document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=443965>Question 443965</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hey, I have question about finding a equation for a parabola with a focus of (3,4) and a directrix of Y=2. After finding the equation, I have to graph it, but my math book is not very helpful on this matter, I had to miss class the day before when we went over them and I have a hard time learning out of a book rather than interacting with someone else.<BR>\n" );
document.write( "Anyways, thanks for any help that you might be able to offer, and my name is Wayne. Thanks again. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #306182 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=306182\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the vertex is midway between the focus and the directrix ___ in this case, (3,3)\r<BR>\n" );
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document.write( "the general vertex form is ___ y = a(x - h)^2 + k ___ where (h,k) is the vertex \r<BR>\n" );
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document.write( "a is equal to ___ 1 / (4p) ___ where p is half the distance from the directrix to the focus<BR>\n" );
document.write( "___ the sign of a is determined by the direction FROM the directrix TO the focus\r<BR>\n" );
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document.write( "your equation is ___ y = (1/4)(x - 3)^2 + 3\r<BR>\n" );
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document.write( "starting with the vertex, and working in both directions<BR>\n" );
document.write( "___ plug in values for x<BR>\n" );
document.write( "___ calculate the corresponding y values<BR>\n" );
document.write( "___ plot the points </SPAN>\n" );
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