Write the standard form of the equation and the general form of the equation of each circle of radius r and center (h, k).

(1) GIVEN:

r = 3; (h, k) = (1, 0)

(2) GIVEN:

r = 3; (h, k ) = (0, 0)

(3) Graph each circle on the SAME xy-plane.

NOTE: When (h, k) is given, does it mean that the circle has been moved from the origin (0,0)?