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18 April, 07:10

Which of the following parabolas opens upward and appears narrower than y = - 3x2 + 2x - 1? A. y = 4x2 - 2x - 1 B. y = - 4x2 + 2x - 1 C. y = x2 + 4x D. y = - 2x2 + x + 3

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  1. 18 April, 07:56
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    Choice A will open upward since it is positive and it will appear narrower because the bigger the coefficient, the narrower it is. This is because the coefficient is the slope.
  2. 18 April, 09:43
    0
    All I know is if it's negative it's opening down and if it's positive it's opening upward.
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