Choose the representations or descriptions that model the relation provided in each item. For each relation, select all situations that apply. x -2 0 2 4 f(x) 4 0 4 16 The relation is a function. f( x) = -2 x f(4)= -2 domain: {-2, 0, 2, 4} The relation is not a function. f( x) = x2