Sets, Relations, and Functions

Question 1

What are the Two Ways to describe Sets?

Answer 1

Roster-Form and Set-Builder-Notation

Question 2

What does Roster-Form look like?

Answer 2

It looks like: {…, -3, -2, -1,…}. It states the exact figures in a set.

Question 3

What does Set-Builder-Notation look like?

Answer 3

It looks like: {1≤x≤100}. It reads that x is 1 at the least and 100 at the most. This form doesn’t state the exact members of the set.

Question 4

What is a Relation?

Answer 4

A set of ordered pairs.

Question 5

What is a Function?

Answer 5

A relation in which every element of the domain is paired with one element of the range.