Set 3: Linear Functions

Explanation

Answer: A

Which function has a negative rate of change?

The amount of fuel in a car driving at constant speed

✓ Correct

The distance traveled by a car

The height of a tree over time

The cost of a taxi ride as miles increase

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Decreasing quantity. 1. Fuel: Decreases as you drive $\rightarrow$ Negative slope. 2. Distance: Increases $\rightarrow$ Positive. 3. Height: Increases $\rightarrow$ Positive. 4. Cost: Increases $\rightarrow$ Positive. Strategic Tip: "Used up", "Drains", "Falls" = Negative Slope. Choice B is incorrect. Choice C is incorrect. Choice D is incorrect.

Key Steps:

•

The correct answer is The amount of fuel in a car driving at constant speed

Why others are wrong:

B: Choice B is incorrect and may result from a calculation error.

C: Choice C is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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