I ran into these type of problems occasionally, but I can never find a concrete explanation of how I'm supposed to answer a question that says to "discuss" something. this is a question I'm trying to answer:
Discuss the value of a and b such that the following system has a/ no solution, b/ unique solution or c/ infinitely many solutions. Solve case c, parametrically.
ax + y = 3
x +2y = b
exactly how do i discuss these kind of answers? help please..