1. Find the slope of the line. Describe how one variable changes in relation to the other. a. 1 20, the number of gas increases by 1 gallon per mile.
b. −20, the number of gas decreased by 20 gallons every mile.
c. − 1 20, the number of the gas decreases by 1 gallon every 20 miles.
d. 20, the number of gas increases by 20 gallons every mile