HELP PLZ !!! Show that the set of points are collinear (a) (-2,-6) (2,-4) and (4,-3) (b) (-5,5) (1,1) and (4,-1) (c) (-5,-6) (-2,0) and (-1,2)

Answer 1

(a) note that as x increases by 4, y increases by 2. Then, as x increases by 2, y increases by 1.
(b) and (c) work the same way. Starting at the first point, note that the changes in y and x have the same ratio.

That is, the slope remains constant, and since the middle point figures in both calculations, all the points lie on the same line.