Answer/Step-by-step explanation:
✔️The slope of the proportional graph can be found using a point on the graph, say (2, 10):
Slope = constant of proportionality = y/x
Slope = 10/2 = 5 gallons of water per min
✔️The slope, 5, in this context, represents the minutes needed to add each gallon of water to the pool.
