Beginning Algebra, 11th Edition

2.1

equation
linear equation in one
variable
solution
solution set
equivalent equations

2.3

conditional equation
identity

contradiction

empty (null) set

2.4

consecutive integers

degree

complementary angles

right angle

supplementary angles

straight angle

2.5

formula

area

perimeter

vertical angles

volume

2.6

ratio

proportion

terms of a proportion

extremes

means

cross products

2.8

inequality

linear inequality in one

variable

interval on a number line

interval notation

three-part inequality

KEY TERMS

SUMMARY

CHAPTER 2

164 CHAPTER 2 Linear Equations and Inequalities in One Variable

empty set
1° one degree

0 atob, a:b,or

the ratio of atob

a

b

infinity

negative infinity

set of all real

numbers

1 ˆ,ˆ 2

ˆ

ˆ interval notation for

interval notation for

a...x...b

3 a,b 4

a 6 x 6 b

1 a,b 2

NEW SYMBOLS

1.Asolution setis the set of numbers
that
A.make an expression undefined
B.make an equation false
C.make an equation true
D.make an expression equal to 0.

2. Complementary anglesare angles
   A.formed by two parallel lines
   B.whose sum is 90°
   C.whose sum is 180°
   D.formed by perpendicular lines.


3. Supplementary anglesare angles
   A.formed by two parallel lines
   B.whose sum is 90°
   C.whose sum is 180°
   D.formed by perpendicular lines.

4.Aratio

A.compares two quantities using a

quotient

B.says that two quotients are

equal

C.is a product of two quantities

D.is a difference between two

quantities.

5.Aproportion

A.compares two quantities using a

quotient

B.says that two quotients are equal

C.is a product of two quantities

D.is a difference between two

quantities.

6.Aninequalityis

A.a statement that two algebraic

expressions are equal

B.a point on a number line

C.an equation with no solutions

D.a statement with algebraic

expressions related by

orÚ.

6 ,..., 7 ,

TEST YOUR WORD POWER

See how well you have learned the vocabulary in this chapter.

ANSWERS
1.C; Example:{8} is the solution set of 2.B;Example:Angles with measures 35° and 55° are complementary angles.
3.C; Example:Angles with measures 112° and 68° are supplementary angles. 4.A;Example: 5.B;Example:
6.D; Examples:x 6 5, 7+ 2 yÚ11,- 562 z- 1 ... 3

2

3 =

8

12

7 in.

12 in., or

7

12

2 x+ 5 =21.

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