A doctor collected data to determine the association between age of an infant and its weight. She modeled the equation y - 1.25x + 7 for the line of best fit The independent variable, x, is time in months and the dependent
variable, y, is weight in pounds. What does the y-intercept mean in this context?
A)
The infant's starting weight is 7 pounds.
B)
The infant's starting weight is 1.25 pounds.
The infant's weight increases by an additional 7 pounds for each month,
D)
The infant's weight increases by an additional 1.25 pounds for each month.