1 answer:
Answer:
8.89 gallons per hour
Step-by-step explanation:
In order to find the rate of change, you need to find the slope of the graph.
To find the slope, you use equation (y2 - y1 ) / (x2 - x1)
The given coordinates are:
(0 hours, 0 gallons)
(4.5 hours, 40 gallons)
Next, plug in the x and y values into the slope equation:
y2 = 40 gallons
y1 = 0 gallons
x2 = 4.5 hours
x1 = 0 hours
Slope = (40 - 0) / (4.5 - 0) = 40 gallons / 4.5 hours = 8.888889 gallons per hour
round to 8.89
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Step-by-step explanation:
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