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Find the equation of the circle centered at (-1.-7) with radius 8. Write your equation in the form (x -  h)^2 + (y - k)^2 = r^2.

 Jul 21, 2021
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(x -  h)^2 + (y - k)^2 = r^2.               h = -1     k = -7     r = 8       sub in to the equation to get

 

(x- (-1))^2 + (y-(-7))^2 = 8 ^2

(x+1)2 + (y+7)2 = 82

 Jul 21, 2021

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