Answer:
Number lines Inequality
First ⇔

Second ⇔

Third ⇔

Fourth ⇔

Explanation:
Inequality 1.

Multiply both sides by 9 , we get

Divide both sides by 7, we get
which is shown by the fourth number line.
Inequality 2.

Multiply both sides by 4 , we get

Divide both sides by -6, we get
which is shown by the second number line.
Inequality 3.

Multiply both sides by 4 , we get
which is shown by the first number line.
Inequality 2.

Multiply both sides by 3 , we get

Divide both sides by 2, we get
which is shown by the third number line.