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Find the axis of symmetry. x^2-9x+3

  • Algebra -


  • Algebra -

    The axis of symmetry is an equation.

    The axis of symmetry is ...
    x = 'the x-value of the vertex'

    to find the x value of the vertex evaluate -b/(2a) of
    y = ax^2 + bx + c

    so x = 9/2

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