document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=887540>Question 887540</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the center and radius of a circle given:<BR>\n" );
document.write( "x^2+y^2-12y+31=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #536703 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=536703\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Complete the Square for the y, and put the equation into standard form.\r<BR>\n" );
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document.write( "<a  rel=nofollow HREF=\"http://www.algebra.com/tutors/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev\">Click to see lesson that includes how to complete the square.</a>\r<BR>\n" );
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document.write( "Adjust the equation into <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2B%28y-k%29%5E2=r%5E2 ALIGN=MIDDLE  ALT=\"x%5E2%2B%28y-k%29%5E2=r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "In your example, the x coordinate of the center is 0.  The center of your circle will be some point, (0,k)  and radius is r. </SPAN>\n" );
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