A medical student is conducting a study to track boys’ weight from age 5 to age 18. The student graphs some data and determines the line of best fit is y = 1.73x + 80.13. What does the slope mean in this situation?
A.
the increase in the number of pounds a boy gains each year

B.
the decrease in the number of pounds a boy gains each year

C.
the increase in the number of years for each pound a boy gains

D.
the decrease in the number of years for each pound a boy gains