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A freight train is carrying goods across the country. The number of gallons of fuel it has used varies directly with the distance it has traveled. See the graph
below.
Number
of gallons
used
450
400
300-
200
130-
100-
D
50 100 150 300 210 100 350 400 450
Distance traveled (miles)
(a) How many gallons does the train use per mile?
gallon(s)
(b) What is the slope of the graph?

A freight train is carrying goods across the country The number of gallons of fuel it has used varies directly with the distance it has traveled See the graph b class=

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