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प्रश्न
Find m if the slope of the line passing through the point (-7,5) and (2,m) is `1/3`
उत्तर
Slope of line PQ = `("y"_2 - "y"_1)/("x"_2 - "x"_1)`
⇒ `1/3 = ("m" - 5)/(2 + 7)`
⇒ 3 = m - 5
⇒ m = 8
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