document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=190926>Question 190926</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/1602773033/algebrahomeworkh>saxon algebra 2</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Graph, find center, vertices,  co-vertices,foci, and eccentricity e.<BR>\n" );
document.write( "9x^2+4y^2=36 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #143353 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=143353\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Graph, find center, vertices, co-vertices,foci, and eccentricity e.<BR>\n" );
document.write( "9x^2+4y^2=36<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Standard form is:<BR>\n" );
document.write( "x^2/4 + y^2/9 = 1<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "center is (0,0)<BR>\n" );
document.write( "vertices: (0,3) and (0,-3)<BR>\n" );
document.write( "co-vertices: (2,0) and (-2,0)<BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "a = 3, b = 2<BR>\n" );
document.write( "For an ellipse a^2 = b^2 + c^2<BR>\n" );
document.write( "c = sqrt(a^2-b^2) = sqrt(9-4) = sqrt(5)<BR>\n" );
document.write( "------------------------------------------<BR>\n" );
document.write( "Foci: (0,sqrt(5)) , (0,-sqrt(5))<BR>\n" );
document.write( "---------------------------------------<BR>\n" );
document.write( "e = c/a = sqrt(5)/3<BR>\n" );
document.write( "=========================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );