Set 3: Quadratic Equations (Advanced)

Explanation

Answer: A

A jump rope forms a parabola $y = 0.05x^2 - 2$ . What is the lowest point?

-2

✓ Correct

-0.05

Detailed Explanation

Choice A is correct. Choice A is the correct answer. 1. The vertex is at $(0, -2)$ because there is no $bx$ term. 2. Since $a=0.05$ is positive, it opens upward. 3. The lowest point is the vertex y-coordinate: -2. Choice B is incorrect. Choice C is incorrect. Choice D is incorrect.

Key Steps:

•

The correct answer is -2

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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