document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1144012>Question 1144012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the hyperbola with the following properties.\r<BR>\n" );
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document.write( "                 Foci at (-8,-7) and (-8,-13)<BR>\n" );
document.write( "                 Vertices at (-8,-9) and (-8,-11)<BR>\n" );
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document.write( "(1) Foci at (-8,-7) and (-8,-13)<br><BR>\n" );
document.write( "So...<BR>\n" );
document.write( "Transverse axis is vertical<BR>\n" );
document.write( "General equation is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y-k%29%5E2%2Fb%5E2-%28x-h%29%5E2%2Fa%5E2=1 ALIGN=MIDDLE  ALT=\"%28y-k%29%5E2%2Fb%5E2-%28x-h%29%5E2%2Fa%5E2=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "c = 3<BR>\n" );
document.write( "center (h,k) = (-8,-10)<br><BR>\n" );
document.write( "(2) Vertices at (-8,-9) and (-8,-11)<br><BR>\n" );
document.write( "So a = 1.<br><BR>\n" );
document.write( "Use c^2 = a^2+b^2 to determine b^2; then write the equation. </SPAN>\n" );
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