Consider the following system:
x + y + az = 1
x + ay + z = 4
ax + y + z = b
For which values of a does the system have a unique solution, and for which pairs
of values (a; b) does the system have more than one solution? The value of b does
not have any effect on whether the system has a unique solution. Why?
How do I go about doing this? It's already in reduced form. Idk what to do =/