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BIGDOG96
Patrick drew the incorrect graph shown below to represent the circle (x – 1)2 + (y + 3)2 = 4 Which statement explains why Patrick’s graph is incorrect? Answers A. The radius of the circle should be 2 instead of 4. B. The center of the circle should be (1, 9) instead of (1, -3). C. The center of the circle should be (-1, 3) instead of (1, -3). D. The radius of the circle should be 16 instead of 4.
@PaxPolaris can you help me?
a circle with center \((h,k)\) and radius \(r\) will have the formula: \[\Large \left( x-h \right)^2+\left( y-k \right)^2=r^2\]
so in your formula: what's the center supposed to be? and what's the radius is supposed to be?
center is (1,-3)... yes but \(\large r \ne 4\) \[\Large \color{green}{r^2=4}\]
Great, thanks a million!