Which of the following represent a horizontal function? select all that apply 2y=2(x+y)
2x-2y=2x+4
x=7
y=2

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.