geometry
posted by sara .
Circle O is defined by the equation x2 + (y  2)2 = 25. Plot the center of Circle O and type in the coordinates of one point with integral values that lies on Circle O.

go to wolframalpha . com to do the plotting. Just type in
implicit plot x^2 + (y2)^2 = 25
surely you know that 3^2 + 4^2 = 25. So, just find values for x and y such that x^2 = 9 and (y2)^2 = 16.