Algebra-2

Question Analysis
This question tests the student's understanding of the direction in which a parabola opens and the location of its vertex based on the vertex form of a quadratic function.

Key Concept Explanation
In the vertex form , the sign of determines the direction in which the parabola opens. If , the parabola opens upward; if , it opens downward. The vertex of the parabola is at .

Step-by-step Solution
1. Identify the given function:

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