L6 Representing numbers

Question 1

Set-builder Notation?

Answer 1

{ 𝑥: 𝑥 ≥ 3 ; 𝑥 ∈ ℤ }

Question 2

Interval Notation?

Answer 2

</= | solid circle | [ ]

> < | hollow circle | ( )

Question 3

What does a colored circle represent?

Answer 3

That the variable number is included.

Question 4

What does the open circle represent?

Answer 4

That the variable number is excluded.