A mother gives birth to a 7 pound baby. Every 3 months, the baby gains 2 pounds. If x is the age of the baby in months, then y is the weight of the baby in pounds. Find an equation of a line in the form y = mx + b that describes the baby's weight.
Every month, the baby gains 2/3 of a pound. So we have:
y = 2/3x + 7
The baby starts off with 7 pounds. So we add 7 pounds + 2/3 times the number of months passed since birth.
Every month, the baby gains 2/3 of a pound. So we have:
y = 2/3x + 7
The baby starts off with 7 pounds. So we add 7 pounds + 2/3 times the number of months passed since birth.