document.write( "Question 1060075: Solve the exercise by solving a system of equations. \r
\n" ); document.write( "\n" ); document.write( "Find the center and radius of the circle whose graph passes through the points
\n" ); document.write( "(−5, −1),
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\n" ); document.write( "(−11, −9),
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\n" ); document.write( "(−4, −8).
\n" ); document.write( " (Hint: Use the equation
\n" ); document.write( "x2 + y2 + ax + by + c = 0.) \n" ); document.write( "

Algebra.Com's Answer #675123 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
I made an Excel sheet that does that.
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document.write( "|x  y  x^2+y^2 1|\r\n" );
document.write( "|x1 y1 x1+y1^2 1|\r\n" );
document.write( "|x2 y2 x2+y2^2 1| = 0\r\n" );
document.write( "|x3 y3 x3+y3^2 1|\r\n" );
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\n" ); document.write( "Without the sheet, I would do it like this:
\n" ); document.write( "A(-5,-1)
\n" ); document.write( "B(-11,-9)
\n" ); document.write( "C(-4,-8)
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\n" ); document.write( "Find the perpendicular bisector of AB, and of BC
\n" ); document.write( "Find the intersection of the 2 bisectors, that's the center.
\n" ); document.write( "The radius is the distance from the center to any point.
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