Posted by me on .
The capacity of the gas tank in a car is 16.5 gallons. The car uses 10.5 gallons to travel 178.5 miles. After driving 85 more miles, only 1 gallon of gasoline remains in the tank. Which linear equation and graph model the amount of gas g left in the tank after driving m miles?

algebra 2 
Steve,
178.5mi/10.5gal = 17 mi/gal
This is consistent with 85mi/5gal, so
g(m) = 16.5  m/17