I don't understand this question: 798 ,054 = 700,0000 +++50+4

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.

Write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

15 point ! ~ see if you know the answer to both you!