Can someone explain this and me write it and write the list of steps

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.

What is the midpoint of np if n (1,9) and p (-5-1)