Question

HELP ATTACHED IMAGE

Answer 1

w(t)=192-t

Where the weight (in punds) is a function of the time (in weeks).

Answer 2

Look to me like two points on the line are (0,192) and (8,185)
We can find that slope : (192-185)/(0-8) = 7/-8
So he loses 7/8 pounds per week.

Answer 3

I believe the line crosses the y axis at 192 and that is the y intercept.