document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=726637>Question 726637</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an equation of the circle that has center (1,-5) and passes through (5,-1)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #444716 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=444716\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find an equation of the circle that has center (1,-5) and passes through (5,-1)<BR>\n" );
document.write( "Standard form of equation for a circle: <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;\" >, (h,k)=(x,y) coordinates of center, r=radius<BR>\n" );
document.write( "Use distance formula to find radius:<BR>\n" );
document.write( "radius=&#8730;[(x1-x2)^2+(y1-y2)^2]=&#8730;[(5-1)^2+(-1+5)^2]=&#8730;[(4)^2+(4)^2]=&#8730;32=4&#8730;2<BR>\n" );
document.write( "radius^2=32<BR>\n" );
document.write( "Equation for given circle: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-1%29%5E2%2B%28y%2B5%29%5E2=32 ALIGN=MIDDLE  ALT=\"%28x-1%29%5E2%2B%28y%2B5%29%5E2=32\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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