8
advanced-math

A jump rope forms a parabola y=0.05x2−2y = 0.05x^2 - 2. What is the lowest point?

A

-2

B

0

C

2

D

-0.05

Correct Answer: A

Choice A is the correct answer.

  1. The vertex is at (0,−2)(0, -2) because there is no bxbx term.
  2. Since a=0.05a=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.

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Set 19: Quadratic Equations and Functions 19