Question 839149: prove that the points A(0,-3), B(2,1) and C(9,-6) all lie on the circumference of a circle with the centre (5,-3).
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! prove that the points A(0,-3), B(2,1) and C(9,-6) all lie on the circumference of a circle with the centre (5,-3).
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You can find the distance from (5,-3) to the 3 points. If they're equal, it's proven.
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You can use 1 of the points, find the distance which is the radius, then see if the other 2 are on the circle.
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