Chapter 5 Vocab

Question 1

boundary

Answer 1

a line or curve that separates the coordinate plane into regions

Question 2

closed half-plane

Answer 2

the solution of a linear inequality that includes the boundary line

Question 3

compound inequality

Answer 3

two or more inequalities that are connected by the words AND or OR

Question 4

half-plane

Answer 4

the region of the graph of an inequality on one side of a boundary

Question 5

inequality

Answer 5

an open sentence that contains the symbol <, >, <=, or >=

Question 6

intersection

Answer 6

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

Question 7

open half-plane

Answer 7

the solution of a linear inequality that does not include the boundary line

Question 8

set-builder notation

Answer 8

a concise way of writing a solution set; for example, {t|t<17} represents the set of all numbers t such that t is less than 17

Question 9

union

Answer 9

the graph of a compound inequality containing OR; the solution is a solution of either inequality, not necessarily both