Question 9 Answer & Explanation - SAT Algebra

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algebra

Which function has a negative rate of change?

The amount of fuel in a car driving at constant speed

The distance traveled by a car

The height of a tree over time

The cost of a taxi ride as miles increase

Correct Answer: A

Choice A is the correct answer. Decreasing quantity.

Fuel: Decreases as you drive $\rightarrow$ Negative slope.
Distance: Increases $\rightarrow$ Positive.
Height: Increases $\rightarrow$ Positive.
Cost: Increases $\rightarrow$ Positive.

💡 Strategic Tip: "Used up", "Drains", "Falls" = Negative Slope.

Choice B is incorrect.Choice C is incorrect.Choice D is incorrect.

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Linear Functions Set 98

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