Brandon has a 55-gallon fish tank. he estimates he can drain the tank at an average rate of 11 gallons per minute. in a linear model of this situation, x represents the number of minutes the tank has been draining and y represents the amount of water in the tank. relative to this situation, what does the y-intercept represent? a. the y-intercept represents the number of minutes it takes to drain the tank. b. the y-intercept represents the amount of water in the tank before it begins draining. c. the y-intercept represents the rate at which the tank can be drained. d. the y-intercept represents the amount of water in the tank after it has been drained.