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Question
Find p if the slope of the line passing through the point (-2.5) and (p,2p +1) is 1.
Sum
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Solution
Slope of line AB = `("y"_2 - "y"_1)/("x"_2 - "x"_1)`
⇒ 1 = `(2"p" + - 5)/("p" + 2)`
⇒ p + 2 = 2p - 4
⇒ 6 = p
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