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A quality control inspector is verifying a technical drawing where a new access ramp must be perpendicular to a road segment modeled by the equation y = 2x - 3. The ramp has been calculated to have a slope of -1/2. To confirm that these two lines are truly perpendicular, the inspector recalls that the product of their slopes (2 * -1/2) must be exactly ____.

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Updated 2026-04-18

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