The vertex form of a parabola is given by for constants a, h, and k. At what value of x does change sign (i.e. from negative to positive or vice versa)?

Name: The vertex form of a parabola is given by for constants a, h, and k. At what value of x does change sign (i.e. from negative to positive or vice versa)?
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Question

The vertex form of a parabola is given by  for constants a, h, and k. At what value of x does  change sign (i.e. from negative to positive or vice versa)?

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The Answer of The vertex form of a parabola is given by  for constants a, h, and k. At what value of x does  change sign (i.e. from negative to positive or vice versa)?

The Vertex Form of a Parabola Is Given by