Algebra 1 Common Core Student Edition, Grade 8-9

Ch ap t er Rev i ew

Co n n ect i n g 8 I G i d e a s an d A n sw e r i n g t he Essen t i al Q u est i o n s

1 S o l v i n g E q u a t i o n s

and Inequalit ies

There are several ways

to solve systems of

equations and inequalities,

including graphing and

using equivalent forms of

equations and inequalities

within the system. The

number of solutions depends

on the type of system.

So l v i n g Sy st e m s o f Eq u a t i o n s

(Lessons 6-1, 6-2, and 6-3)

y = x

y = -3x - 4

Th e so l u t i o n

is (—1, - 1 ).

Li n ear In eq u al i t i es (Lesso ns 6- 5 and 6- 6)

2 M o d e l i n g

Yo u can r ep r esen t m an y

real- world mathematical

problems algebraically.

When you need to find two

unknowns, you may be able

to write and solve a system

of equations.

Applying Linear Systems

(Lesson 6-4)

Ch ap t er V o ca b u l a r y

consist ent (p. 365)

dependent (p. 365)

elim inat ion method (p. 378)

inconsistent (p. 365)

independent (p. 365)

• linear inequality (p. 394)


• solution of an inequality (p. 394)


• solution of a system of linear
  equations (p. 364)


• solution of a system of linear
  inequalities (p. 400)
  
  
  • substitution method (p. 372)
  
  
  • system of linear equations (p. 364)
  
  
  • system o f linear inequalit ies (p. 400)
  
  
  
  

Choose the correct term to complete each sentence.

1. A system of equations that has no solution is said to be ?.


2. You can solve a system of equations by adding or subtracting the equations in such
   a way that one variable drops out. This is called the? method.


3. Two or more linear equations together form a(n)?.

408 Chapter 6 Ch ap t er Rev i ew