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प्रश्न
Check whether the given lines are parallel or perpendicular
5x + 23y + 14 = 0 and 23x – 5x + 9 = 0
उत्तर
5x + 23y + 14 = 0 and 23x – 5x + 9 = 0
Slope of the line (m1) = `(-5)/(23)`
Slope of the line (m2) = `(-23)/(-5) = 23/5`
m1 × m2 = `(-5)/(23) xx (23)/(5)` = – 1
∴ The two lines are perpendicular
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