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A line that is perpendicular to the line represented by the equation ( y = -3 ) is a vertical line. Since ( y = -3 ) is a horizontal line (constant y-value), any vertical line, such as ( x = k ) (where ( k ) is any real number), will intersect it at a right angle. Thus, the slopes of the two lines are negative reciprocals, confirming their perpendicularity.

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1w ago

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