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sqdancefan

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Answer:

  vertex: (-2, 4)

Step-by-step explanation:

Use your regression calculator to find the parameters of the quadratic model.

The vertex form equation is ...

  y = -3(x +2)^2 +4

so the vertex is (-2, 4).

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The standard form equation is the expansion of the above:

  y = -3x^2 -12x -8

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