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Write the equation of the circle in general form. Show your work.

 May 3, 2017
 #1
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The center  is  ( -1, 1 )    and the radius  is   3

 

So....the equation is

 

(x + 1)^2   + ( y - 1)^2  =  9

 

x^2 + 2x + 1  + y^2 - 2y + 1  = 9

 

x^2 + y^2 + 2x - 2y - 7  =  0

 

 

cool cool cool

 May 3, 2017

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