Equation of a Circle (Modeling Geometry)
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A circle has the equation x2 + y2=16. What is the radius of the circle?
4
A circle has the equation (x+5)2 + (y-2)2 = 9. What is the center of the circle?
(-5, 2)
A circle has the equation (x-3)2 + (y + 5)2 = 36. Which of the following statements is false?
The y-coordinate of the center is 5.
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