Suppose you start with a full tank of gas (17 gallons) in your truck. after driving 4 hours, you now have 3 gallons left. if x is the number of hours you have been driving, then y is the number of gallons left in the tank. at what rate is your truck using gas? state your answer as a reduced fraction. incorrect gallons per hour find an equation of a line in the form y = mx + b that describes the amount of gas in your tank. y =