The distance traveled in a car varies directly as the amount of gasoline used if a car traveler 640 mi and use 32 gallons of gas find the c o n s t a t v a r i a t i o n of miles per gallon
The constant of variation can be found by dividing the distance traveled by the amount of gasoline used.
Constant of variation = Distance traveled / Amount of gasoline used
Constant of variation = 640 mi / 32 gallons
Constant of variation = 20 miles per gallon