LuLu7348 LuLu7348

12-03-2017
Mathematics

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

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kinucat289 kinucat289

12-03-2017

Narrowing it down it's either a or c because the other 2 choices open downward (negative a).
Graphing the 2 parabolas choice c is narrower.
c

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