2016 December(74H) Math Question 60

Conics

- Circles

60. The circle with equation x2 + (y — 1)2 = 1 is graphed in the standard (x,y) coordinate plane below. Suppose the circle rolls along the positive x-axis for 2 rotations and then stops. Which of the following is an equation of the circle in its new position?

Choice K

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