variable y varies directly with variable x, and y = 56 when x = 8.
what is the value of y when x = 3?
y = [? ]

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.