Dr. Garcia, a dentist, just got a new fish tank for his waiting room. As he filled it with water, the tank got heavier.
This situation can be modeled as a linear relationship.
What does the y-intercept of the line tell you about the situation?
A. without any water, the tank weighs 30 kilograms
B. dr.garcia added exactly 30 liters of water
C. after dr. garcia added 90 liters of water, the tank weighed 120 kilograms
D. the tank's weight increased 1 kilogram for each liter of water added