Problem 34 of 7
Derive the circle equation from distance formula for center (5,-5) and radius sqrt(2).
Using a hint is okay. It just tells the trainer to give you a little more review.
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set distance from center to variable point equal to radius.
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Derivation must set distance from variable point to center equal to radius and square both sides.
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Your answer is equivalent to the expected form.
Walkthrough
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1. Let (x,y) be a point on the circle.
2. Set its distance to the center equal to the radius.
3. Square both sides to get standard form.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Writing standard form without explaining distance equals radius.