### Home > MC2 > Chapter 2 > Lesson 2.1.3 > Problem 2-41

2-41.

Based on the number line, what was the original number?

Experiment with the number line and use your observations to answer the question.

Draw a sketch with a number line similar to part (a) and (b).

After drawing arrows 8 to the right and then 8 to the left, what do you notice?

It is the same as the starting position.

Can you see why?