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Write the equation of the circle centered at ( − 7 , 4 ) (-7,4) with diameter 18.
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Write the equation of the circle centered at ( − 7 , 4 ) (-7,4) with diameter 18.

User Justin Vartanian
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1 Answer

3 votes

Answer:


(x+7)^2+(y-4)^2=81

Explanation:


(x-h)^2+(y-k)^2=r^2\\(x-(-7))^2+(y-4)^2=9^2\\(x+7)^2+(y-4)^2=81

Radius is r=9, center is (h,k)=(-7,4)

User Sohail Si
by
8.1k points
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