3 years ago

The center of the circle is at (-3,1) and it's radius is 9. What is the equation of the circle?

2 answers:

8 0

(x+3)^2+(y-1)^2=18
x and y always lie and you must square 9

7 0

The answer is 1 or A.

$(x-h)^{2}+ (y-k)^{2}= r^{2}$

$(x+3)^{2}+ (y-1)^{2}=81$

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