Question

solve this question plzzzzzz

Answer 1

Given that A, B and C are collinear

Hence ar(ΔABC) = 0

Area of Triangle = 1/2{ x1 ( y2 − y3 ) + x2 ( y3 − y1 ) + x3 ( y1 − y2 ) }

= 1/2 { 3( k - 3 ) + 4( 1 - 2 ) + 5( 2 - k ) = 0

= 2k + 3 = 0

= k = -3/2

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