ShmoopTube

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Here's your shmoop du jour.

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What is the radius and coordinate center of the circle: 25 = (x - 2) squared + (y + 2) squared?

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And here are your options...

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OK, here's the deal. When a circle is expressed in the form of the formula above, the radius

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is always the square root of the integer to the left...

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that means that the radius is the square root of 25, which is 5.

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And the coordinates of the center are the numbers in the x and y parentheses.

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The trick for the coordinates is that you have to flip around the positives and negatives

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from what's in the parentheses. Since the circle here has x minus two and

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y plus two, the coordinates are positive 2 and negative two.

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So our answer is just B.

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