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2 October, 12:13

What is the equation of a circle with center (2,-8) and radius 9?

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Answers (2)
  1. 2 October, 12:19
    0
    9^2 = (x+2) ^2 + (y+8) ^2

    Step-by-step explanation:

    The equation is r^2 = (x+h) ^2 + (y-k) ^2
  2. 2 October, 12:25
    0
    x2+y2-4x+16y-13

    Step-by-step explanation:

    center (h, k) = 2,-8

    radius (r) = 9

    we know

    (x-h) 2 + (y-k) 2=r2

    now insert above given information

    (x-2) 2 + (y+8) 2=9*9
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