Question 964301: What is the equation for a circle with diameter with endpoints (2,-5), and (4,1)
Answer by josgarithmetic(39615)   (Show Source):
You can put this solution on YOUR website! You can do this!
Midpoint Formula gives the center coordinate pair, (h,k).
The size of the radius, r, will be HALF the distance from (2,5) to (4,1); which you find with Distance Formula.
Standard Form Equation for Circle,  .
You NEED to already know the Distance Formula and the Midpoint Formula.
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Just a little bit more help:
Center and Midpoint of the two given diameter endpoints,
and diameter is  , but understand, the radius is HALF of the diameter.
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