P and q are rational numbers. Which of the following expressions cannot be used to find the distance between them on the number line. |p - q| |p + q| |q + (-p)| |q - p| Answer: |p + q| Step-by-step explanation: Lets say: p = 4 and q = 9 The following expressions have the same absolute value: |p-q| = |4-9| = |-5| = 5 |q + (-p)| = |9 + (-4)| = |5| = 5 |q - p| = |9 - 4| = |5| = 5 While: |p + q| = |4 + 9| = |13| = 13
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