Raymond B. answered 02/01/22
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Math, microeconomics or criminal justice
perpendicular
the slopes are negative inverses if perpendicular.
the slope are equal if parallel
-6y = -9x - 20
has slope = 9/6 = 3/2
-3y = 2x -11
has slope = -2/3
-2/3 is the negative inverse of 3/2