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OpenStudy (anonymous):
determine whether the following pairs of lines are parallel, perpendicular, or neither 5x-6y=19 6x+5y=-30
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OpenStudy (anonymous):
5x-6y=19 -6y = 19-5x y = (5/6)x-(19/6) 6x+5y=-30 5y= -30-6x y= (-6/5)x -6 slopes are 5/6 and -6/5 they are negative reciprocals, therefore the lines are perpendicular
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