2/6 = 1/3 = 0.3333
0.333 is less than 1 so it should be on the left side of the graph.
4/3 = 1.333
1.333 is greater than 1 so it should be on the right side of the graph .
So the bigger dot on the left hand side which is before 1 should be 2/6 while the smaller dot on the right hand side which is after 1 should be 4/3 .