Solve using area model. need with question a

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

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.