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Stella
Stella asked in Science & MathematicsMathematics · 6 years ago

Graph |x+1|-|x-1|?

Why is there a negative part in the graph if I must take absolute values? Shouldn't it be an all positive graph?

4 Answers

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  • Nesan
    6 years ago
    Favorite Answer

    For example, lets say, x = -2

    |-2 +1| - |-2 - 1|

    |-1| - |-3|

    1 - 3

    = - 2

  • Elizabeth M
    Lv 7
    6 years ago

    If x=-6, |x+1|=|-5|=5 and |x-1|=|-7|=7 so

    y=|x+1|-|x-1|=5-7=-2

    You do not take the abs value of y

  • Anonymous
    6 years ago

    But you are taking the DIFFERENCE between a couple of numbers.

    If you were just taking the SUM of some absolute values, then it couldn't be negative.

  • Polyhymnio
    Lv 7
    6 years ago

    You are not taking the absolute value of the entire expression, just of the minuend and subtrahend. THEN you are subtracting.

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