Question

prove that the points (-2,5),(0,1),(2,-3)are collinear.

Answer 1

Friend follow the following steps to prove:
-Take a Graph.
-Draw X-axis and Y-axis and plot the points.
-Then draw a line joining all three points.
-You will see that the line is straight.
-And we all know that if all points are on a line, they are collinear.
-Hence proved.


Hope this helps you 
Thank You

Answer 2

(1-5)/(0+2)=(-3-1)/(2-0)
-2=-2
hence proof