Question

2x +
V. Who am I?
(4 × 2 = 8)
19. I am a collection of natural numbers, zero and negative
numbers. Who am I?
20. I am a symbol who have a fixed numerical value. Who am I?
21. I am a visual representation of the set of all integers with
positive integers to the right of zero and negative integers to the
left of zero. Who am I?
22. I am combined by variables and constants by using operations
like addition and subtraction. Who am I?​

Answer 1

Answer:

19)Integers

20) - π

21) Number Line

22)Algebra