Amedical 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

A. The increase in the number of pounds a boy gains each year.

Step-by-step explanation:

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 (1)

where x represents the age of the boys and y represents the weight of the boy corresponding to his age.

Therefore, the slope of the equation (1) represents the increase in the number of pounds a boy gains each year. (Answer)

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3