document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=551180>Question 551180</A>: <I><SPAN STYLE=\"word-break: break-all;\">  How do i Write the equation of a circle with endpoints of the diameter at <BR>\n" );
document.write( "(4, -3) and (-2, 5). <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 #359507 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=359507\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the Midpoint Formula to find the circle's center. The Midpoint Formula is ((x1+x2)/2, (y1+y2)/2) or (average of the x-coordinates, average of the y-coordinates). The average of the x-coordinates is h, and the average of the y-coordinates is k.\r<BR>\n" );
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document.write( "h = (-2 + 4)/2\r<BR>\n" );
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document.write( "h = 2/2 \r<BR>\n" );
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document.write( "h = 1\r<BR>\n" );
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document.write( "k = (-3 + 5)/2\r<BR>\n" );
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document.write( "k = 2/2\r<BR>\n" );
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document.write( "k = 1\r<BR>\n" );
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document.write( "This circle is centered at the point (1,1).\r<BR>\n" );
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document.write( "We now find the distance from one of the given points and the center point (1,1).\r<BR>\n" );
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document.write( "The radius is 5.\r<BR>\n" );
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document.write( "We now plug into the general equation of the circle formula.\r<BR>\n" );
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document.write( "(x - 1)^2 + (y - 1)^2 = (5)^2\r<BR>\n" );
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document.write( "(x - 1)^2 + (y - 1)^2 = 25\r<BR>\n" );
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document.write( "If you don't understand, write back....\r<BR>\n" );
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