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29 April, 05:52

Identify the axis of symmetry and vertex of f (x) = - x^ 2 - 2x-1.

Axis of symmetry: x = - 1; Vertex: (1, 0)

Axis of symmetry: x = 1; Vertex: (1, 0)

Axis of symmetry: x = - 1; Vertex: ( - 1, 0)

Axis of symmetry: x = 1; Vertex: ( - 1, - 1)

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  1. 29 April, 09:08
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    Axis of symmetry formula = - b/2a

    x = - (-2) / 2 (-1)

    x=2/-2

    x=-1

    sub - 1 into original equation

    y = - (-1) ^2-2 (-1) - 1

    y=-1+2-1

    y=0

    vertex = (-1, 0)
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