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Uniform Motion

The pair of l...

Question

The pair of lines represented by $2 x - k y + 3 = 0, 4 x + 6 y - 5 = 0$ are parallel, if $k =$

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Solution

Slope must be equal for two lines to be parallel.
$\Rightarrow \frac{- (- k)}{2} = \frac{- 6}{4} \Rightarrow k = - 3$

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