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Question
Find the slope of the line perpendicular to AB if : A = (0, −5) and B = (−2, 4)
Solution
Slope of AB = `(-4 - 5)/(-2 - 0)`
Slope of AB = `(-9)/2`
Slope of the line perpendicular to AB = `(-1)/"slope of AB"`
= `(-1)/((-9)/2)`
= `2/9`
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