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    Mathematics
    Grade10
    Easy

    Question

    For a given function r(x) = |x - 1| - |x + 1| , evaluate r(-3)

    1. -2
    2. 2
    3. 6
    4. -6

    hintHint:

    substitute the value in the equation

    The correct answer is: 2

      given the equation; r(x) = |x - 1| - |x + 1|
      now substitute the value 3 in the equation
      r(-3) = |-3 - 1| - |-3 + 1| = |-4| - |-2| = 4 - 2 = 2

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