document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1085764>Question 1085764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question: Identify the radius and center, if the graph of the equation is a circle then sketch it. Otherwise, specify if the graph is a single point (and what this point is), or has no point at all.\r<BR>\n" );
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document.write( "1.8x²+8y²-28+12y+221=0<BR>\n" );
document.write( "2.x²+y²-8x+6y+40=0<BR>\n" );
document.write( "3.x²+y²+22x+18y+215=0<BR>\n" );
document.write( "4.x²+y²-18x+12y+144=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #699853 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=699853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Complete the square to get the equation into the general equation of a circle.<BR>\n" );
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;\" ><BR>\n" );
document.write( "I'll do one, you do the others in the same way.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8x%5E2%2B8y%5E2-28x%2B12y%2B221=0 ALIGN=MIDDLE  ALT=\"8x%5E2%2B8y%5E2-28x%2B12y%2B221=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "I'll assume you made a mistake and that it's <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-28x ALIGN=MIDDLE  ALT=\"-28x\"   DISABLED_style= \"max-width:90%; height:auto;\" > and not <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-28 ALIGN=MIDDLE  ALT=\"-28\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2-%287%2F2%29x%29%2B%28y%5E2%2B%283%2F2%29%29%2B221%2F28=0 ALIGN=MIDDLE  ALT=\"%28x%5E2-%287%2F2%29x%29%2B%28y%5E2%2B%283%2F2%29%29%2B221%2F28=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2-%287%2F2%29x%2B%287%2F4%29%5E2%29%2B%28y%5E2%2B%283%2F2%29x%2B%283%2F4%29%5E2%29%2B221%2F28=%287%2F4%29%5E2%2B%283%2F4%29%5E2 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2%2B221%2F28=49%2F16%2B9%2F16 ALIGN=MIDDLE  ALT=\"%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2%2B221%2F28=49%2F16%2B9%2F16\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2=58%2F16-221%2F28 ALIGN=MIDDLE  ALT=\"%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2=58%2F16-221%2F28\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2=406%2F112-884%2F112 ALIGN=MIDDLE  ALT=\"%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2=406%2F112-884%2F112\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2=-478%2F112 ALIGN=MIDDLE  ALT=\"%28x-7%2F4%29%5E2%2B%28y%2B3%2F4%29%5E2=-478%2F112\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Since the radius term is negative, there is no point at all. <BR>\n" );
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document.write( "If it equals zero, then the center is the single point. <BR>\n" );
document.write( "If its positive, then the square root of the value is the radius of the circle.<BR>\n" );
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document.write( "Do the others the same way.<BR>\n" );
document.write( " </SPAN>\n" );
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