document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=604360>Question 604360</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write an equation of a circle tangent to the lines x=2 and x=12 and passes through the point (4,0)\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #381125 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=381125\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write an equation of a circle tangent to the lines x=2 and x=12 and passes through the point (4,0)<BR>\n" );
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document.write( "Draw the 2 vertical lines: x = 2 and x = 12<BR>\n" );
document.write( "Plot the point (4,0)<BR>\n" );
document.write( "The lines implie the diameter is 10 (radius = 5).<BR>\n" );
document.write( "The center is at (7,k)<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "(x-7)^2 + (y-k)^2 = 5^2<BR>\n" );
document.write( "Solve for \"k\" using (4,0) as a point on the circle:<BR>\n" );
document.write( "(4-7)^2 + (0-k)^2 = 25<BR>\n" );
document.write( "9 + k^2 = 25<BR>\n" );
document.write( "k^2 = 16<BR>\n" );
document.write( "k = 4 <BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "(x-7)^2 + (y-4)^2 = 25<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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