it's raining outside and after 1 hour of rain the water level in jakes pond is 2 meters after 3 hours the water level is 2.8 find the rate of change

Question

it’s a word problem about linear relationships and rate of change and slope

Answer 1

during the last 3 hours we have a change of 2.8 - 2.0 = 0.8 meters of water level

 so the rate of change of water level for the last three hours of rain is 0.8/3 = 0.267 mm/hour  approx