Distance formula on a coordinate plane, does which set is $(x_1, y_1)$ and $(x_2, y_2)$ matter?

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If I have points $(a, b)$ and $(d, b)$ where $d<0$. When calculating the distance between the two points, does it matter whether it is $(a-d)$ or $(d-a)$ as long as I take the absolute value of the answer as the distance between the two points?