Question

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$\large\mathbf{HEY\: QUESTION❤}$



If the points A(-1, -4), B(b, c) and C(5, -1) are collinear and 2b + c = 4, find the values of b and c. ​

Answer 1

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

as points are collinear.

(1/2) [-1 (c +1) + b (-1 +4 ) + 5(-4– c)] = 0 

1/2[-c-1-b+4b-20-5c]=0

3b-6c=21--1

2b+c=4 ×6

12b+6c=24--2

adding 1 and 2

15b=45

b=3

and a=-2

Answer 2

Answer:

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