Which set of (x,y) ordered pairs does not represent a function of x?
A) ((-2,-2): (-1,-1); (0,0); (1,1); (2,2)}
B) ((0,-2); (0,-1); (0,0); (0,1); (0,2)}
c) {(2,-2); (1,-1); (0,0); (-1,1); (-2,2)}
D) ((-2,0); (-1,0); (0,0); (1,0); (2,0)}​