Each equation given below describes a parabola. Which statement best compares their graphs?
y = - 3x2 y = - 7x2
A. Both parabolas open downward, and y = - 7x2 is wider than y = - 3x2.
B. Both parabolas open downward, and y = - 3x2 is wider than y = - 7x2.
C. Both parabolas open to the left, and y = - 3x2 is wider than y = - 7x2.
D. Both parabolas open to the left, and y = - 7x2 is wider than y = - 3x2.
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