Question

A freight train is carrying goods across the country. The distance it has traveled varies directly with the number of gallons of fuel it has used. See the graph below.

Answer 1

6 miles per gallon

slope = 6

Explanation:

Answer 2

Explanation:

The train uses

`(400gallons)/(200miles)`

If you reduce that you get that the train uses

`(2gallons)/(1mile)`

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:

`m=(200-0)/(400-0)=(1)/(2)`