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13 February, 05:00

If a parabola has x-intercepts of 3 and - 5, what is the equation of it's axis of symmetry

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  1. 13 February, 07:52
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    x = - 1

    Step-by-step explanation:

    The x value of the axis of symmetry is precisely halfway between the two given x-intercepts: - 5 and 3 are 8 units apart. Add half of 8 units, or 4 units, to - 5, to obtain:

    -5 + 4 = - 1

    The equation of the axis of symmetry is therefore x = - 1.
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