For the given quadratic equation, determine whether the parabola opens up or down, find the vertex of the parabola, and find the axis of symmetry.y = x2 + 8
A. up; (0, -8); x = 0
B. down; (0, 8); y = 8
C. down; (0, -8); x = 0
D. up; (0, 8); x = 0
Answer: D
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