If the system of linear equations
x + y + 3z = 0
x + 3y + k2z = 0
3x + y + 3z = 0
has a non–zero solution (x, y, z) for some k R, then x is equal to :
- 9
- 3
9
3
The values of for which the system of linear equations
x + y + z = 2
x + 2y + 3z = 5
x + 3y +
has infinitely many solutions are respectively :
5 and 8
4 and 9
6 and 8
5 and 7