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1 September, 13:59

Determine the direction that this parabola opens y=x^2+2x+8

up or down

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Answers (1)
  1. 1 September, 16:10
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    up

    Step-by-step explanation:

    The standard equation for a parabola is y = ax^2 + bx + c. If the coefficient a is positive, then the curve (graph) opens up.

    In y=x^2+2x+8 this coefficient is + 1, so the curve opens up.
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