Question 16The graphs of $y=\log_3 x,$ $y=\log_x 3,$ $y=\log_{\frac{1}{3}} x,$ and $y=\log_x\dfrac{1}{3}$ are plotted on the same set of axes. How many points in the plane with positive $x$-coordinates lie on two or more of the graphs?$2$$3$$4$$5$$6$