Answer:4, this is a linear model because it is consistent since he puts in 4 each week
Step-by-step explanation:
You made the choice to choose the letter A, a second time.
Zero slope is y=#
ex. y=5 or y=127 It can be any number
It would be a horizontal line
Undefined slope is x=#
ex. x=22 or x=1 Again it can be any number
It would be a vertical line