I really need help. I will try my best to post this chart. Age/Mass 5/ 24 6 / 25 7 / 27 8 / 28 9 / 31 10 /34 11 /38 12 /41 13 /47 14 /55 The slashes are there to separate the numbers and columns How would you determine the equation of the line of best fit through these points. Its a curve by the way.
An exponential fit seems rather close to me. Plot the natural log of the mass versus the age. It more or less conforms to a linear relationship. One would expect that a young boy may sometimes indulges!