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Thread: x-intercepts question

  1. #1

    x-intercepts question

    Which of the following are the x-intercepts of the parabola ?

    (A)

    (B)

    (C)

    (D)

    Thanks!

  2. #2
    In order to find the x-intercepts of this parabola we must set and then solve the quadratic equation using GDC.

    For example, the commands for Casio FX-9860G II to solve a quadratic equation are:

    MENU>EQUA>F2(Polynomial)>Degree (2)>insert the coefficients and get two real roots,

    . So the points of x-intercepts are .


    Therefore the correct answer is (B).

    Hope these help!!

  3. #3
    Thank you for your prompt reply!

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