document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1080854>Question 1080854</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the center and radius of the circle whose graph passes through the points (-3,-5), (-9,-13), and (-2,-12). Hint: use the equation x^2+y^2+ax+by+c=0. <BR>\n" );
document.write( "I need help, I have various examples but they skip steps so I don't understand how to solve it.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #694935 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=694935\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You will make a system of equations with the form of each equation as  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%2Bby%2Bc=-%28x%5E2%2By%5E2%29 ALIGN=MIDDLE  ALT=\"ax%2Bby%2Bc=-%28x%5E2%2By%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, because the right-side member will be a computable value for each equation.\r<BR>\n" );
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document.write( "Each point gives a separate equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28a%28-3%29%2Bb%28-5%29%2Bc=-%289%2B25%29%2Ca%28-9%29%2Bb%28-13%29%2Bc=-%2881%2B169%29%2Ca%28-2%29%2Bb%28-12%29%2Bc=-%284%2B144%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28-3a-5b%2Bc=-34%2C-9a-13b%2Bc=-250%2C-2a-12b%2Bc=-148%29 ALIGN=MIDDLE  ALT=\"system%28-3a-5b%2Bc=-34%2C-9a-13b%2Bc=-250%2C-2a-12b%2Bc=-148%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >------continue and solve this system for a, b, and c.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28a=12%2Cb=18%2Cc=92%29 ALIGN=MIDDLE  ALT=\"system%28a=12%2Cb=18%2Cc=92%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(used online calculator at https://matrix.reshish.com/gauss-jordanElimination.php )\r<BR>\n" );
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document.write( "Use the equation formed using the found coefficients and convert the equation into standard equation form for a circle ( can mean, completing the squares) and read the center and radius from the equation. </SPAN>\n" );
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