22.) Find the value of 'a' for which the following points
A(a, 3), B(2, 1) and C(5, a) are collinear. Hence find
the equation of the line AB.
[2014
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Answer:
Points A (a,3) B (2,1 )and c (5 , a) are collinear. If the points are collinear the area of triangle is 0. Therefore, The value of a are 4,-1
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