a] x= 1, 2, 4, 6, 9

y=0.2, 0.6, 1.8, 3.5, 6.7

-for this one I used Fathom and got y=ax^k that best fit the data since the r squared was closer to 1.0 (correlation), however I'm not sure how to compute for a and k...

b] x= 1, 2, 4, 6, 9

y= 0.3679, 0.1353, 0.0183, 0.0025, 0.0001

-for this one I used Fathom again and got y=ae^kx, but do not know how to do the computations...

any advice?