At 7: 00 am there were 14,000 gallons of water in lance’s pool when he noticed there was a leak. after 6 hours there were only 5,000 gallons of water remaining in his pool. write an equation that describes the number of gallons of water as a function of the time the pool has been leaking. y = -5,000x + 14,000 y = -1,500x + 14,000 y = -9,000x + 14,000 is it possible for a vertical line to have a negative slope? no yes