9000100705

Level: 
Project ID: 
9000100705
Accepted: 
1
Clonable: 
1
Easy: 
0
Given vectors \(\vec{a} = (1;y;3)\) and \(\vec{b} = (2;-1;-2)\), find the value of coordinate \(y\) so that the vector \(\vec{u} = (-4;-1;12)\) is a linear combination of \(\vec{a}\) and \(\vec{b}\).
\(y = -2\)
\(y = 1\)
\(y = -1\)
\(y = 3\)