Let y be the difference of two numbers such that one number varies directly as x while the other number varies inversely as x. I
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For this case we have that by definition, the equation of a line in the slope-intersection form is:
Where:
m: It is the slope
b: It is the cut point with the y axis
The slope is:
Thus, the equation is of the form:
We substitute the given point and find "b":
Finally, the equation is:
Answer:
The mileage is 27.6 mi/gal
Miles driven = 552.4 mi
Calculate gallons used.
Answer: 20.015 gallons (approximately 20 gallons)
Miles driven = 552.4 mi
Calculate gallons used.
Answer: 20.015 gallons (approximately 20 gallons)