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प्रश्न
Find the value of a line perpendicular to the given line 5x+2y-9 = 0
उत्तर
When the lines are perpendicular to the product of their slopes is -1
i.e m1 x m2 = -1
5x+2y-9 = 0
2y = -5x + 9
y = `-5/2"x" + 9/2`
m1 = `-5/2`
Required slope m2 = `-1/"m" = (-1)/(-5//2) = 2/5`
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