SOLUTION: Find an equation for the circle that goes through the these points (9,2) , (-1,12), and (-9,-4)

Question 1167506: Find an equation for the circle that goes through the these points (9,2) , (-1,12), and (-9,-4)
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Find an equation for the circle that goes through the these points A(9,2), B(-1,12), and C(-9,-4)
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Find the perpendicular bisectors of AB and BC
Find the intersection of the 2 bisectors - That's the center of the circle, (h,k).
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The radius is the distance from the center to any of the 3 points.
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Or:

  
| x   y  x^2+y^2  1|
| 9   2    85     1|
|-1  12   145     1| = 0
|-9  -4    97     1|

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