Answer:
only group 1 n 3 are explained - u attached 3 twice n missed 2
Explanation:
group 1:
all of 'em have no sol'n
each graph in a set of eqns are parallel to the other
each set of eqns has the same slope
4 a set of eqns, if they have the slope, they are parallel lines with no sol'n.
group 3:
all of 'em have infinite no. of sol'ns
each graph in a set of eqns overlap with the other
each set of eqns are identical but with a different multiplier
4 a set of eqns, if they are identical, their graphs will overlap with infinite no. of sol'ns.