For the circle (x -1)2 + (y + 1)2 = 1

(a) The center is (-1, 1).
(b) (0, 2) is a point on the circle.
(c) The diameter of the circle is 3.
(d) The x-axis is tangent to the circle.
(e) The y-axis is a secant line for the circle.


(d) The x-axis is tangent to the circle.

Mathematics

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