document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=609828>Question 609828</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write the equation of a circle with center (2,4) and containing the point (-2,1) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #383983 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=383983\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> write the equation of a circle with center (2,4) and containing the point (-2,1)<BR>\n" );
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document.write( "Standard form of equation of a circle: (x-h)^2+(y-k)^2=r^2, (h,k)=(x,y) coordinates of center, r=radius<BR>\n" );
document.write( "For given circle:<BR>\n" );
document.write( "(x-2)^2+(y-4)^2=r^2<BR>\n" );
document.write( "plug in (x,y) coordinates of given point (-2,1) on the circle to find r^2<BR>\n" );
document.write( "(-2-2)^2+(1-4)^2=r^2<BR>\n" );
document.write( "(-4)^2+3^2=16+9=25=r^2<BR>\n" );
document.write( "Equation of given circle:<BR>\n" );
document.write( "(x-2)^2+(y-4)^2=25\r<BR>\n" );
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document.write( " </SPAN>\n" );
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