document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=426478>Question 426478</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1] What is the equation of a circle whose center is not the origin?<BR>\n" );
document.write( "2] What is the equation of a circle whose center is the origin?<BR>\n" );
document.write( "3] What is a two-point equation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296681 by </B><A HREF=/tutors/aboutme.mpl?userid=Gogonati><B>Gogonati(855)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Gogonati><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=Gogonati><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=296681\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Answer: The standard equation of the circle centered at (h,k) is given:\r<BR>\n" );
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document.write( "   <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2 ALIGN=MIDDLE  ALT=\"%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > where r is the radius and (h,k) the center.\r<BR>\n" );
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document.write( " If the center is the origin then the equation will be:\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=r%5E2 ALIGN=MIDDLE  ALT=\"x%5E2%2By%5E2=r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > where r is the radius.\r<BR>\n" );
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document.write( " If a line pas through the points (X1,Y1) and (X2,Y2),its equation is:\r<BR>\n" );
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document.write( "     <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28Y-Y1%29%2F%28Y2-Y1%29=%28X-X1%29%2F%28X2-X1%29 ALIGN=MIDDLE  ALT=\"%28Y-Y1%29%2F%28Y2-Y1%29=%28X-X1%29%2F%28X2-X1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Where: m=(Y2-Y1)/(X2-X1) is the slope of the line. </SPAN>\n" );
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