Question

The equation m = 40g gives the distance in miles, m, that a car can travel using g gallons of gas.

a. If the car has gone 140 miles, how much gas was used? Show your thinking.

b. Write an equation that represents the inverse function: the gallons of gas as a function of distance in miles

Answer 1

a)

g = m / 40

g = 140 /40

g = 3.5

b)

m = 40g

m / 40 = g