document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=795645>Question 795645</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The equation of a circle and a point on it are given. Find the equation of the tangent at that point<BR>\n" );
document.write( "a) x^2 + y^2 = 10 (1,-3)<BR>\n" );
document.write( "b) x^2 + y^2 = 4 (&#8730;2, &#8730;2)<BR>\n" );
document.write( "Can you please help me out? Thank you so much in advance:)\r<BR>\n" );
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document.write( "Can you also please show the steps it would really help me understand:) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #481091 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=481091\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The equation of a circle and a point on it are given. Find the equation of the tangent at that point<BR>\n" );
document.write( "a) x^2 + y^2 = 10 (1,-3)<BR>\n" );
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document.write( "2xdx + 2ydy = 0<BR>\n" );
document.write( "xdx = -ydy<BR>\n" );
document.write( "dy/dx = -x/y (for any point on a circle)<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "m @ (1,-3) = 1/3<BR>\n" );
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document.write( "Use y = mx + b and the point to find b<BR>\n" );
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