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The slopes of perpendicular lines are negative reciprocals.
The slope of [ y = 3x - 5 ] is 3, so any line perpendicular to it has a slope of -1/3.
The equation for a perpendicular to it is [ y = -x/3 plus any number ].
y = -x/4
Slope of a line perpendicular to x-y=16
The slopes of perpendicular lines are negative reciprocals.[ y = -3x + 2 ] is perpendicular to [ y = x/3 plus any number ].
Neither perpendicular nor parallel
Parallel. They both have a slope of 4.