document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=939801>Question 939801</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a circle passes through the points A(-2,4) , B(7,7) and the center lies on the line y-x=1. Find the radius and standard equation </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #572731 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39625)</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=572731\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A and B are both the same distance from the center of the circle.  The given line contains the center of the circle, the line also being equivalent to y=x+1, means the center of the circle is a variable point (x,x+1).\r<BR>\n" );
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document.write( "Setup a relationship of distances:\r<BR>\n" );
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document.write( "If that makes sense, then you understood about half the solution process.<BR>\n" );
document.write( "Simplify; put into standard form, identify the radius value. </SPAN>\n" );
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