document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=267528>Question 267528</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation of a circle with centre C(2 ; 3) and which 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 #196299 by </B><A HREF=/tutors/aboutme.mpl?userid=vksarvepalli><B>vksarvepalli(154)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vksarvepalli><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/cgi-bin/show-face.mpl?user=vksarvepalli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=196299\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> with centre C(2 ; 3) and which is tangent to the x-axis.\r<BR>\n" );
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document.write( "since the circle is tangent to the x-axis <BR>\n" );
document.write( "the radius will be 3 units (y coordinate of the centre)\r<BR>\n" );
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document.write( "now the equation of the circle with center (x1,y1) and radius r is\r<BR>\n" );
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document.write( "(x-x1)^2 + (y-y1)^2 = r^2\r<BR>\n" );
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document.write( "so the eq. is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-2%29%5E2%2B%28y-3%29%5E2=9 ALIGN=MIDDLE  ALT=\"%28x-2%29%5E2%2B%28y-3%29%5E2=9\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "if we expand we get \r<BR>\n" );
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document.write( "            <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2By%5E2-4x-6y%2B4=0 ALIGN=MIDDLE  ALT=\"x%5E2%2By%5E2-4x-6y%2B4=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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