The Owner of a Gas Station Records the Number of Gallons

The owner of a gas station records the number of gallons of gas he sells over a period of time. He notices that the number of gallons of gas he sells depends linearly on the price he charges for each gallon. When he charges $1.67 per gallon of gas he sells 1000 gallons of gas each day. When he charges $2.49 per gallon he sells 600 gallons. Which one of the following equations model the number of gallons sold at price x ?

A) y = 1814.63 -488 x
B)
C)
D)
E)