Please bear for my long questions here, but I literally need our help in my assignment.

Graph the linear system and determine how many solutions it has: no solution, exactly one solution or
infinitely many solutions. (How do you graph this? Can you provide a graph for this?)

a. x + y = 4
x - y = 2

b. x + 2y = -2
-3x - 6y = 6

c. 2x - 3y = -6
-3y + 2x = 3

Multiplying rational expressions: (I will just write divided by as the operation used)