document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=672437>Question 672437</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an equation of the circle that has center (-1, 1)and passes through(-5,6)   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #418040 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=418040\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Equation of circle is<BR>\n" );
document.write( "(1) (x-a)^2 + (y-b)^2 = r^2, where (a,b) are the coordinates of the center of the circle and r is the radius. In your case you have<BR>\n" );
document.write( "(2) (x+1)^2 + (y-1)^2 = r^2<BR>\n" );
document.write( "To find r substitute the point (-5,6) into (2) and get<BR>\n" );
document.write( "(3) (-5+1)^2 + (6-1)^2 = r^2 or<BR>\n" );
document.write( "(4) 16 + 25 = r^2 or<BR>\n" );
document.write( "(5) r^2 = 41<BR>\n" );
document.write( "The equation of the circle is<BR>\n" );
document.write( "(6) (x+1)^2 + (y-1)^2 = 41 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );