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10 September, 09:19

Find the equation of the circle centered at $ (1,-4) $ with radius 3.

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  1. 10 September, 10:51
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    (x-1) ^2 + (y+4) ^2 = 9

    Step-by-step explanation:

    We can write the equation for a circle as

    (x-h) ^2 + (y-k) ^2 = r^2 where (h, k) is the center and r is the radius

    Substituting in (1,-4) for the center and 3 for the radius

    (x-1) ^2 + (y - - 4) ^2 = 3^2

    (x-1) ^2 + (y+4) ^2 = 9
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