document.write( "Question 357301: Hi Guys, really struggling with this question.\r
\n" ); document.write( "\n" ); document.write( "Given the Cartesian equation of a circle in the form
\n" ); document.write( "x^2+y^2+8x-8y+16=0\r
\n" ); document.write( "\n" ); document.write( "Find by completing the squares, the centre coordinates of the circle and its radius, Hence sketch the graph of the circle taking care to label the x-axis and y-axis and the origin. \n" ); document.write( "

Algebra.Com's Answer #255161 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi,
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document.write( "The standard equation of a circle with center C(h,k) and radius r is :
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document.write( "completing the square
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document.write( "x^2+y^2+8x-8y+16=0
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document.write( "x^2+ 8x +16 + y^2-8y +16 -16=0
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document.write( "(x +4)^2 + (y-4)^ = 16
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document.write( "Center of the circle is Pt(-4,4) and the circle has a radius of 4
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