One way to do this is to pick a point in the each shaded region and see if that point satisifies all three inequalities
So....in the top left graph, let's just choose a point, say (1,0) = (x, y)
So
0 - 1 ≤ 4(1) is true
1 + 0 > - 4 is true
0 ≤ (1/3) (1) is true
So....as Penquino found.....the top left graph is correct !!!!