1. Then she moved her finger along the number line, counting by ones.

2. Let me draw a number line.

3. Adjust the Z and X keys until these number line up as closely as possible.

4. The integers divide the number line into infinitely many half - open intervals.

5. One convenient way to visualize the real numbers is by the way of a number line.

6. Can you tell me, your apartment near the subway station a few number line?