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

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

The center of the circle is at (-3,1) and it's radius is 9. What is the equation of-example-1
User Alan Wagner
by
8.1k points

2 Answers

4 votes
(x+3)^2+(y-1)^2=18
x and y always lie and you must square 9
User Niqo
by
8.3k points
2 votes
The answer is 1 or A.


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


(x+3)^(2)+ (y-1)^(2)=81
The center of the circle is at (-3,1) and it's radius is 9. What is the equation of-example-1
User Haroon Khan
by
7.7k points
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