9000100705

SubArea: 
Points and vectors
Level: 
A
Project ID: 
9000100705
Accepted: 
1
Clonable: 
1
Easy: 
0
Given vectors a→=(1;y;3) and b→=(2;−1;−2), find the value of coordinate y so that the vector u→=(−4;−1;12) is a linear combination of a→ and b→.
y=−2
y=1
y=−1
y=3