document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=485884>Question 485884</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation for the parabola with vertex (0, 0) and directrix x = 4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #332229 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=332229\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the equation for the parabola with vertex (0, 0) and directrix x = 4<BR>\n" );
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document.write( "The directrix, x=4, is a straight vertical line so the parabola opens rightwards with a horizontal axis of symmetry. Standard form of its equation: (y-k)^2=4p(x-h)^2, with (h,k) being the (x,y) coordinates of the vertex.<BR>\n" );
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document.write( "For given parabola:<BR>\n" );
document.write( "p=4 (distance from vertex to directrix on axis of symmetry)<BR>\n" );
document.write( "Equation: (y-0)^2=4*4(x-0)^2<BR>\n" );
document.write( "Equation: y^2=16x </SPAN>\n" );
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