Question 716002
The key to solving this is to try to factor each of the y coordinates.  See how they relate to the x coordinates.  To be thorough, find the complete prime factorization of y coordinate of each point.


{{{54=2*3^3}}}, and {{{162=2*3^4}}}


You see a base of 3.  The 2 is working as a coefficient.  Now recheck the points using the complete factorizations of y.
(3,{{{2*3^3}}}) and (4,{{{2*3^4}}}).  
Each point is found according to a formula, ({{{x}}}, {{{ 2*3^x}}}).


That should be all you need to continue and finish solving the problem.
(Obvious now is the function is {{{f(x)=2*3^x}}} ).