Multiple Choice

A civil engineering technician is using a geoboard to model the grade of a drainage swale with a slope of −13-\frac{1}{3}. Based on the definition of slope as riserun\frac{\text{rise}}{\text{run}}, in which direction must the technician move 1 unit vertically to correctly represent the 'rise' of -1?

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Updated 2026-09-17

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