The water in a barrel is 24 inches deep. When the plug is pulled out of the barrel, the water depth is reduced 3 inches each hour. If this was to be modled in a linear equation, y=mx+b, what would be the slop, m, and what does it mean? a. the stop is 24 because that is the amount of water at the beginning
b. the slope is -24 because that is the amount of water at the beginning
c. the slope is 3 because the depth of the water is increasing 3 inches per hour
d. the slope is -3 because the depth of water is decreasing 3 inches per hour