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प्रश्न
Find the relation connecting p and q, if the lines py = 2x + 5 and qx + 3y = 2 are parallel to each other.
उत्तर
Slope of py = 2x + 5 is `2/"p"`
Slope of line qx + 3y = 2 is `(-"q")/3`
Since the lines are given parallel their slopes must be equal
`therefore 2/"q" = (-"q")/3`
`therefore "pq" = -6`
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