In the diagram, a circle centered at the origin, a right triangle, and the Pythagorean theorem are used to derive the equation of a circle, x + y = 2. X Q(0, 0) P(x, y) P S If the center of the circle were moved from the origin to the point (h, k) and point P at (x, y) remains on the edge of the circle, which could represent the equation of the new circle? O (h+x)+(k+ y) = 2 O (x-h)+(y-k)=2 O (k+x) + (h+ y) = 12 O (x-k)+(y-h) = 2