Find the value of k for which the points are collinear `(8,1),(k,-4),(5,2)`

In each of the following find the value of k for which the points are collinear. (i) (7, –2), (5, 1), (3, k) (ii) (8, 1), (k, – 4), (2, –5)

Find the values of k for which the points (2k ,3k),(1,0),(0,1),a n d(0,0) lie on a circle.

Find the value of x for which the points (1,-1),(2,1)and (x,5) are collinear.

Find the value of x for which the points (x, -1) (2,1) and (4, 5) are collinear.

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

Find the value of x for which the points (x,-1),(2,1) and (4,5) are collinear.

Find the value of x for which the points (x-1),\ (2,1)a n d\ (4,5)\ are collinear.

Find the value of k for which (1, 1), (3, 2) (4, k) is collinear.

Find the values of a for which points (8,-7,a),(5,2,4) and (6,-1,2) are collinear.

The value of k for which points (k, 1), (2, 3), (3, 4) are collinear.