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Q. If the sum of slopes of the lines given by $x^2 - 4pxy + 8y^2 = 0$ is three times their product then p has the value

COMEDKCOMEDK 2012Straight Lines

Solution:

$ - \frac{4p}{8} = - \frac{3}{8} \:\: \Rightarrow \:\: p = \frac{3}{4}$