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Using the following equation, find the center and radius:
x2 - 4x + y2 + 8y = -4 (5 points)
The center is located at (-2, -4), and the radius is 4.
The center is located at (2, -4), and the radius is 4.
The center is located at (-2, -4), and the radius is 16.
The center is located at (2, -4), and the radius is 16.

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what does k stand for and how do I find the height in the eqaution?

(h, k) is the centre of the circle and r is the radius

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