Which number line represents the solution set for the inequality 3x < -9?
0
-4
-3
-2
-1
0
1
2
3
4
0
a+ +
-4 -3 -2 -1
0
1
2
3
4
-4 -3 -2 -1 0
1
2
3
4
at
-4 -3 -2 -1 0
1
2
3
4

We have the following inequality

First we simplify the inequality by dividing both sides by

So which means x is any number that is smaller than -3 non inclusive.

Hope this helps.

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.