6. It is a straight line extended on both directions as
illustrated by arrowheads and used to represent the
set of real numbers
7. They are any of the numbers from the preceding
subsets. They can be found on the real number line.
The union of rational numbers and irrational
numbers are examples of this
8. They are numbers that cannot be expressed as a
quotient of two integers
b
b
9. They are numbers that can be expressed as a
quotient of two integers. The integer a is the
numerator, while the integer b. which cannot be o is
the denominator. This set includes fractions and
some decimal numbers.
10 They are the result of the union of the set of
whole numbers and the negative of counting
numbers
11. These are numbers consisting of the set of
natural or counting numbers and zero​