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8 November, 17:59

Consider the quadratic function:

f (x) = x2 - 8x - 9

Vertex:

What is the vertex of the function?

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Answers (1)
  1. 8 November, 18:18
    0
    X = - b/2a = 8/2 = 4

    y = 16 - 8*4 - 9 = 16 - 32 - 9 = - 25

    the wertex is (4,-25)
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