Find the value of ‘k’ , for which the points are collinear (8,1),(k,-4),(2,-5)
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Hy mate..
Here we can find the value of k by using triangle formula i. e.
1/2 [ x1 ( y2-y3) +x 2 (y3-y1) +x3 (y1-y2)
Now,
1/2 [ 8(-4 - {-5}) + k ( - 5 - 8) + 2 ( 8-{-4})
0= 8(1) +k(-6) +2(5)
8 - 6k+10 =10
- 6k =-18
K=3
Hope you understand.
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