Draw the graph of y = - 5 and Y = 5 on the same graph are the line parallel? find the point of intersection of two lines​ help me in this

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Find x & pleeeeaaaassseeee me !

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