To win a game, francine needs to move more than 10 spaces

Whats the name of the vertical axis

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.