Algebra I Vocabulary Chapter 3

Any number that makes an inequality true is called a

Solution of the inequality

Inequalities that have the same solution are called

Equivalent inequalities

Inequalities consisting of two distinct inequalities joined by the word and or the word or are called

Compound inequalities.

Describing a portion of the number line using parentheses, brackets, and infinity is called

Interval notation.

Indicating a set by listing the elements in the set between curly braces is called

Roster form

Describing the properties of an element in a set between curly braces is called

Set-builder notation

The set symbol { } translates to

“the set containing”

The set symbol Ø translates to

“the empty set” and means the set that

Contains no elements.

The set symbol U translates to

“union” and means all the elements in

One set or the other

The set symbol ∩ translates to

“intersection” and means all the elements that are

Common to both sets.

The largest set used for a particular discussion is called the

Universal set.

A set consisting of elements from a given set is called a

A subset, and the symbol for subset is



A’ is read

“A complement” and the complement of set A contains all those elements in

The universal set not in set A.

Sets that have no elements in common are called

Disjoint sets.