What is the slope? a. 0 b. undefined !

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Answer this question! 30 points and brainliest!

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.