Question

So we are left with the following questions:
1. What are the numbers, that are left on the number
line, called?
2. How do we recognise them? That is, how do we
distinguish them from the rationals (rational
numbers)?
These questions will be answered in the next section​

Answer 1

Answer:

1) Negative Numbers on the Number Line

The set of whole numbers does not include negative numbers, which extend to the left from zero on the number line below. This second number line is called an integer number line, since integers are the set of numbers including all whole numbers and their negative opposites

2)