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Linear functions SAT question
Math · Algebra · Medium · Answer it here, explanation included.
The given function models the number of gallons of gasoline that remains from a full gas tank in a car after driving miles. According to the model, about how many gallons of gasoline are used to drive each mile?
ExplanationShow
Choice A is correct. It's given that the function models the number of gallons that remain from a full gas tank in a car after driving miles. In the given function , the coefficient of is . This means that for every increase in the value of by , the value of decreases by . It follows that for each mile driven, there is a decrease of gallons of gasoline. Therefore, gallons of gasoline are used to drive each mile.
Choice B is incorrect and represents the number of gallons of gasoline in a full gas tank.
Choice C is incorrect and may result from conceptual errors.
Choice D is incorrect and may result from conceptual errors.
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