Question

Find the value of k for which the points (–5, 1), (1, k) and (4, –2) are collinear.​

Answer 1

Answer:

See,

As they are collinear,

Area = 0

By using Formula,

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

-5k -10 -3+4-4k =0

-9k -9=0

or -9k =9

or k = -1

Step-by-step explanation:

*Be Careful When You Use Formula.

Answer 2

Answer:

-1

Step-by-step explanation:

Please find the explanation in the attached photograph.

Hope this helps you...