: Classify the equations whether it is a linear equation in two variables or not. If it is, identify the values of A, B, and C. If not, write X in the last column.

Answer:
#1 Not
#2 Not, that's a linear inequality in two variables but it'll depend on you... you can decide, a=1 b=1 c=0
#3 a=1 b=1 c=5
#4 a=1 b=1 c=2
#5 Not
#6 a=2 b=3 c=8