I wrote the domain and range in interval notation, not sure if that’s how you’re asked to do it. This is how I was taught to state the domain/range of a graph.
We have a ratio of 3 hours / 7.5 miles We want to know how many miles he can walk in 1 hour so, divide both sides by 3 -> 1 hour / 2.5 miles He is walking at 2.5 mph
