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Unformatted text preview: Two lines are perpendicular if and only if their slopes are negative reciprocals of each other. Example 3: Find an equation of the line that passes through the point (-2, 2) and is parallel to the line 2 x 4 y 8 = 0. Example 4: Find an equation of the line that passes through the point (-1, -3) and is perpendicular to the line that passes through (3, -4) and (9, -6)....
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