document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=838345>Question 838345</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation with a Foci of (-6,0) and (6,0) and an x-intercept of (-8,0) and (8,0)\r<BR>\n" );
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document.write( "Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #505060 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=505060\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the equation with a Foci of (-6,0) and (6,0) and an x-intercept of (-8,0) and (8,0)<BR>\n" );
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document.write( "Equation is that of an ellipse with horizontal major axis and center at the origin.<BR>\n" );
document.write( "Its standard form: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2Fa%5E2%2By%5E2%2Fb%5E2=1 ALIGN=MIDDLE  ALT=\"x%5E2%2Fa%5E2%2By%5E2%2Fb%5E2=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "length of major axis=16=2a<BR>\n" );
document.write( "a=8<BR>\n" );
document.write( "a^2=64<BR>\n" );
document.write( "foci: ±6<BR>\n" );
document.write( "c=6<BR>\n" );
document.write( "c^2=36<BR>\n" );
document.write( "c^2=a^2-b^2<BR>\n" );
document.write( "b^2=a^2-c^2=64-36=28<BR>\n" );
document.write( "Equation:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2F64%2By%5E2%2F28=1 ALIGN=MIDDLE  ALT=\"x%5E2%2F64%2By%5E2%2F28=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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