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Question
Find the value of a line perpendicular to the given line 9x-3y = 5
Solution
When the lines are perpendicular to the product of their slopes is -1
i.e m1 x m2 = -1
9x - 3y = 5
3y = 9x -5
y = 3x - `5/3`
m1 = 3
Required slope = `(-1)/"m"_1 = (-1)/3`
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