Question

Frank set out to Alaska in his van. The amount of fuel remaining in the van's tank (in liters) as a function of distance driven (in kilometers) is graphed. How fast did the truck consume its fuel?

Answer 1

The line passes through the points (0,500) and (250, 350). This means that the van consumes 500 - 350 = 150 liters after 250 kilometers. That is:

`\frac{150\text{ liters}}{250\text{ kilometers}}=0.6\frac{\text{ liters}}{\text{ kilometer}}`

The truck consumes 0.6 liters per kilometer