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The center of a circle is located at (--2,7). The radius of the circle is 2. 

What is the equation of the circle in general form?

Guest Apr 26, 2017
 #1
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We have

 

(x + 2)^2  +  ( y - 7)^2  =   4          expand

 

x^2  + 4x  + 4   +  y^2  - 14y  +  49    = 4          subtract 4 from both sides

 

x^2 + y^2  + 4x  - 14y  +  49   = 0

 

 

 

cool cool cool

CPhill  Apr 26, 2017

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