Level:
Project ID:
2000019010
Accepted:
0
Clonable:
0
Easy:
0
The system of equations is given by:
\[\begin{aligned}
x+y -z=3 & &
\\3x -y-7z =-7& &
\\ax +3y +z= 11& &
\end{aligned}\]
Find the value of a real parameter \(a\) for which the system has infinitely many solutions.
\(1\)
\(-1\)
\(2\)
\(-2\)