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The graph of which function has an axis of symmetry at x=-1/4

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  1. 15 March, 15:24
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    axis of symmetry is the x value of the vertex

    for

    y=ax^2+bx+c

    x value of vertex=-b/2a

    first one

    -1/2 (2) = -1/4

    wow, that is right

    answer is first one

    f (x) = 2x^2+x-1
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