Show that the vectors 
 are collinear.
We know that two vectors are collinear if they have the same direction or are parallel or anti-parallel. They can be expressed in the form 
 where a and b are vectors and 'm' is a scalar quantity.
From the question,
Let 
 and ![]()
Here,![]()
![]()
So,
 where, m=-2.
∴ The given two vectors are collinear.