Which number line represents the solution set for the inequality 3x <-9?
4
-3 -2 -1
0
i
ż ż
a
It
4 -3 -2 -1
0
1
2
3
4
-4 -3 -2 -1 0
1
2
3
4
Ato
4 -3 -2 -1 0
1
2
3
4