document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=749798>Question 749798</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the center of circle with these three points ( -1,3) (-13,3) (-7,9) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #456164 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=456164\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the center of circle with these three points (-1,3) (-13,3) (-7,9)<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "A(-1,3) B(-13,3) C(-7,9)<BR>\n" );
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document.write( "				<BR>\n" );
document.write( "	X	Y	x^2+y^2	Coeff<BR>\n" );
document.write( "Point 1	-1	3	10	1<BR>\n" );
document.write( "Point 2	-13	3	178	1<BR>\n" );
document.write( "Point 3	-7	9	130	1<BR>\n" );
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document.write( "Using the matrix above, the center is at (-7,3)<BR>\n" );
document.write( "-72(x^2+y^2) - 1008x + 432y = 1584<BR>\n" );
document.write( "x^2 + 14x + y^2 - 6y + 72 = 0<BR>\n" );
document.write( "(x+7)^2 + (y-3)^2 = 36 </SPAN>\n" );
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