The equation to represent the relationship between x and y is y = 15 - 3.6x .
In the question ,
it is given that
fuel used by jetliner per hour = 3600 gallons
fuel available in the jetliner = 15000 gallons
Given that y represents the amount of fuel remaining in the tank after x hrs.
As the unit of y is in thousands of gallon
So , according to the question
the equation becomes ,
y = 15 - 3.6x
For plotting the graph
Substitute x= 1hr , y = 11.4 , (1,11.4)
x = 2 , so y = 7.8 , (2, 7.8)
x = 3 , so y = 4.2 , (3,4.2)
x = 4 , so y = 0.6 , (4,0.6)
Therefore , the equation is y = 15 - 3.6x , the graph of the equation is drawn below .
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