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Question
Show that the lines x – 2y – 7 = 0 and 2x − 4y + 5 = 0 are parallel to each other.
Solution
Let m1 be the slope of the line x – 2y – 7 = 0.
∴ m1 = `(-1)/(-2) = 1/2`
Let m2 be the slope of the line 2x – 4y + 5 = 0.
∴ m2 = `(-2)/(-4) = 1/2`
Since, m1 = m2
∴ The given lines are parallel to each other.
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