find the value of p for which the points are (-1,3),(2,p),and (5,-1) are collinear
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Answer:
Since the given points are collinear, the slope of the line joining the points (-1, 3) and (2, p) is equal to the slope of the line joining the points (-1, 3) and (5, - 1).
Thus,
6 (p - 3) = 3 (- 4)
6p - 18 = - 12
6p = - 12 + 18 = 6
Therefore, p = 1
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