Algebra-2

Question Analysis
This question tests the student's understanding of the direction in which a parabola opens and the effect of the coefficient on the width of the parabola. The vertex form provides information about the direction and the stretch or compression of the parabola.

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 absolute value of affects the width of the pa...