9000108705

SubArea: 
Points and vectors
Level: 
B
Project ID: 
9000108705
Accepted: 
1
Clonable: 
0
Easy: 
0
Given vectors \(\vec{u} = (1;y;3)\) and \(\vec{v} = (1;2;1)\), find the value of the parameter \(y\) which ensures that the vectors are perpendicular.
\(- 2\)
\(1\)
\(2\)
\(0\)