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    Mathematics
    Grade10
    Easy

    Question

    If the first difference of the data is constant, then the value of d is ________.

    1. 9    
    2. 11    
    3. - 4    
    4. 0    

    The correct answer is: - 4

      The first difference is the difference of the consecutive y - values.
      So, 2 – 8 = - 10 - d
      d = - 4

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