Section Formula CBSE NCERT Solutions Chapter 7 Exercise 7.3 Question 2
2. In each of the following find the value of ‘k’, for which the points are collinear.
(i) (7, -2), (5, 1), (3, k) (ii) (8, 1), (k, -4), (2, -5)
Solution (i)
(7, -2), (5, 1), (3, k)
Because, the given points are collinear, it means the area of triangle formed by them is equal to zero.
Area of Triangle =
Solution (ii)
(8, 1), (k, -4), (2, -5)
Because, the given points are collinear, it means the area of triangle formed by them is equal to zero.
Area of Triangle =
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