susie’s hair is sixteen inches long and it grows 2 inches in length (L) every three months (m) i’m wondering how to get the linear table and what the initial value is

Okay, here we have this:
We can observe that the y-intercept (when m = 0) is equal to 16 inches, and that the slope is 2/3, therefore we obtain the following equation:
L(m)=2/3m+16