document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=972352>Question 972352</A>: <I><SPAN STYLE=\"word-break: break-all;\">  9.Find the equation of a circle with center (1, -1) and that passes through the origin. \r<BR>\n" );
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document.write( "10.  Find the equation of a circle with center (2, 1) that is tangent to the x-axis.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #594689 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=594689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the equation of a circle with center (1, -1) and that passes through the origin.<BR>\n" );
document.write( "Radius = distance from origin to (1,-1) = sqrt(1^2+1^2) = sqrt(2)<BR>\n" );
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document.write( "Ans: x^2 + y^2 = 2<BR>\n" );
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document.write( "10. Find the equation of a circle with center (2, 1) that is tangent to the x-axis.<BR>\n" );
document.write( "The point of tangency is (2,0)<BR>\n" );
document.write( "Radius = sqrt[(2-2)^2+(1-0)^2] = 1<BR>\n" );
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document.write( "Ans: (x-2)^2 + (y-1)^2 = 1<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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