Answer:
Step-by-step explanation:
The train uses

If you reduce that you get that the train uses

To find the slope of the line, we will use the 2 points on the coordinate plane where the graph goes through: (0, 0) and (400, 200)
Applying the slope formula:

Answer:
the same as the original equation
Step-by-step explanation:
Since they don't intersect the slope is the same