Honors Algebra I Chapter 5 Vocabulary

boundary

A line or a curve that separates the coordinate range into regions.

closed half-plane

The solution of a linear inequality that included the boundary line.

half-plane

The region of the graph of an inequality on one side of the boundary.

open half-plane

The solution of linear inequality that does not include the boundary line.

compound inequality

Two or more inequalities that are connected by the words and or or

intersection

The graph of a compound inequality containing and; the solution is the set of elements common to both inequalities

set-builder notation

a concise way of writing a solution set

union

The graph of a compound inequality containing or; the solution is a solution of either inequality, not necessarily both.

inequality

A statement that compares two quantities using