What is the domain of the following function: J(I, y) = Vazty (a) a and y are all real numbers except (x, y) # (0,0) (b) r and y are all real numbers provided that y 2 -a (e) s and y are all real numbers provided that y > -72 d) / and y are all real numbers except a # 0 of a and y are all real numbers