It is not symmetric because it has a peak at 1 and to be symmetric it has to be the same on both sides of the peak
I think it would best be displayed as a line plot.
Square root of 4 is 2
Square root of 9 is 3
7 is between 4 and 9, so its square root is somewhere between 2 and 3, which means the correct answer is between P and Q
