document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147808>Question 147808</A>: <I><SPAN STYLE=\"word-break: break-all;\">  My question is: Write the equation for the ellipse whose center is the origin, has a horizontal major axis length of 12 and passses through the point (-4,2).<BR>\n" );
document.write( "I need help with this, since the horizontal axis is at the origin I get that the foci is (-6,0) and (6,0). I find that the equation will be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2%2F36%29%2B%28y%5E2%2Fb%5E2%29=1 ALIGN=MIDDLE  ALT=\"%28x%5E2%2F36%29%2B%28y%5E2%2Fb%5E2%29=1\"   DISABLED_style= \"max-width:90%; height:auto;\" > but I am having trouble finding what <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E2 ALIGN=MIDDLE  ALT=\"b%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > equals. Can you help me? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #108202 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=108202\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> substituting the coordinates of the point __ (16/36)+(4/(b^2))=1\r<BR>\n" );
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document.write( "subtracting 16/36 __ 4/(b^2)=20/36 __ \"cross\" multiplying __ 144=20b^2\r<BR>\n" );
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document.write( "dividing by 20 __ 36/5=b^2 </SPAN>\n" );
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