polyfit question

I used polyfit like this:

p=polyfit(avg_Y,x,1)

where both avg_Y, and x are 12 by 1 matrix. my purpose is try to find a best fit line (if there is any other way of doing it, please tell me).

Matlab gives me 0.0042 2.5802

what do i do with these numbers? What do they mean? i read help center but it wasnt too helpful. Thanks

Answer 1

[Honglei Chen]

It means

avg_Y = 0.0042*x+2.5802

see

doc polyfit