Question

Find d value of k, following point re collinear (7,-2),(5,1),(3,k)

Answer 1

Heyy mate ❤✌✌❤

Here's your Answer...

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Since, The points are collinear.

Therefore, Area of Triangle = 0

1/2 [x1(y2-y3)+x2 (y3-y1) + x3(y1-y2)] = 0

[7(1-k) + 5(k+2) + 3(-2-1)]=0

7-7k +5k+10-9 = 0

8-2k=0

2k=8

k=8/2 = 4.
✔✔

Answer 2

1/2 [x1(y2-y3)+x2 (y3-y1) + x3(y1-y2)] = 0

[7(1-k) + 5(k+2) + 3(-2-1)]=0

7-7k +5k+10-9 = 0

8-2k=0

2k=8

k=8/2 = 4

Hope that this answer will help you ❤️✨❤️