A puppy's weight, in y ounces, after x weeks, can be represented by y = 1.2x +2.25. Which statement is a correct interpretation of this relationship?
The puppy's weight after 1.2 weeks is 2.25 ounces.
The puppy's weight when it was born was 1.2 ounces.
The puppy's weight increases at the rate of 1.2 ounces per week.
The puppy's weight increases at the rate of 2.25 ounces per week.