Chapter 8 Study Guide
Identify the domain and range of the relation.
Input
Output
–8
–5
1.
x
y
7
–5
1
5
–4
–3
3
4
–1
–7
–2
a. domain: –7, –5, –3, 4, 5
range: –7, –5, –3, 4, 5
b. domain: –4, –1, 1, 3, 7
range: –7, –5, –3, 4, 5
c. domain: –4, –1, 1, 3, 7
range: –4, –1, 1, 3, 7
d. domain: –7, –5, –3, 4, 5
range: –4, –1, 1, 3, 7
4
6
7
9
d. The relation is a function.
Input
Output
–8
–5
–2
Make a mapping diagram that represents the relation
and tell whether the relation is a function.
4
6
7
9
2.
a. The relation is a function.
Input
Output
–5
–8
3. Which ordered pair is a solution of the equation
–2
a.
6
4
9
7
b. The relation is
b.
c.
d.
Find the value of x that makes the ordered pair a
solution of the equation.
a function.
Input
Output
–5
–8
4.
a.
b.
c.
d.
Graph the linear equation.
–2
5.
6
4
9
7
c. The relation is not a function.
a.
y
y
15
15
15 x
–15
15 x
–15
–15
–15
b.
y
6.
15
a.
y
10
15 x
–15
10 x
–10
–15
c.
–10
y
15
b.
y
10
15 x
–15
10 x
–10
–15
d.
–10
c.
y
c.
10
10 x
–10
d. none of these
–10
Graph the line that has the given intercepts.
d.
y
10
8. x-intercept:
a.
10 x
–10
–10
b.
7.
a.
c.
b.
d.
y-intercept:
Find the slope and y-intercept of the line with the
given equation.
13.
a. slope:
y-intercept: 1 b. slope:
y-intercept: none c. slope: 0; y-intercept:
d. slope: 1; y-intercept:
14.
a. slope: 16; y-intercept: 1 b. slope: 16;
y-intercept: 1 c. slope: 1 ; y-intercept: 16
d. slope: 1; y-intercept: 16
Find the intercepts of the equation's graph.
9.
a. x-intercept:
7
, y-intercept: 7
8
b. x-intercept: 7,
7
c. x-intercept: –8, y-intercept: 7
8
d. x-intercept: 7, y-intercept: –8
y-intercept:
15. What is the slope of a line parallel to the line
?
1
1
a. 2 b. 2 c. 
d.
2
2
Write the equation of the graph in slope-intercept
form.
Find the slope of the line.
10.
16.
y
10
A
10 x
–10
B
–10
a. 
2
3
b.
2
3
c. 
3
2
d.
a.
3
2
b.
d.
Find the slope of the line passing through the points.
Write an equation of the line.
11.
a. 
4
15
a. 
1
5
b. 
15
4
c.
15
4
d.
4
15
12.
b. 2
c. undefined
d. 0
17.
c.
y

a.
10
1
4
d.
1
4
c.

1
4
1
4
Write an equation of the line that contains the given
points.
10 x
–10

b.
19.
–10
a.
d.
b.
1
5
c.
d.
3
13
b.
3
13
13
3
1
5
20.
a.
d.
1
4
Solve the linear system by graphing.

b.
c.
21.
a.
c.
y
y
10
10
10 x
–10
10 x
–10
–10
b.
c.
Write an equation of the line that is parallel to the
given line and passes through the given point.
Write an equation of the line with the given slope
and y-intercept.
18.
13
3
a.
–10
d.
y
y
10
10
10 x
–10
10 x
–10
–10
–10
22.
a.
infinitely many solutions
d.
no solution
b.
23. Which point is a solution to the inequality
a.
c.
b.
Graph the inequality.
24.
a.
c.
d.
y
y
10
10
10 x
–10
10 x
–10
–10
–10
b.
y
25.
10
a.
y
10
10 x
–10
10 x
–10
–10
–10
c.
y
10
b.
y
10
10 x
–10
10 x
–10
–10
–10
d.
c.
y
10
10 x
–10
–10
d.
y
10
10 x
–10
–10
Chapter 8 Study Guide
Answer Section
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B
PTS: 1
DIF: Level A
REF: MLPA0337
Lesson 8.1 Relations and Functions KEY: ordered pair | domain | range | relation
Knowledge NOT: 978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: MLPA0339
NCTM 6-8.ALG.1.b
TOP: Lesson 8.1 Relations and Functions
identify | function | map | relation
BLM: Comprehension
978-0-618-79813-1
B
PTS: 1
DIF: Level A
REF: AXG80245
OK.PASS.MTH.02.8.1.1.b
TOP: Lesson 8.2 Linear Equations in Two Variables
equation | solution | ordered pair
BLM: Comprehension
978-0-618-79813-1
A
PTS: 1
DIF: Level C
REF: MLPA0328-WJ
Lesson 8.2 Linear Equations in Two Variables
KEY: solve | equation | solution | ordered pair
Comprehension
NOT: 978-0-618-79813-1
C
PTS: 1
DIF: Level B
REF: MLC30310
OK.PASS.MTH.02.8.1.1.b
TOP: Lesson 8.2 Linear Equations in Two Variables
linear | equation | graph | slope-intercept
BLM: Comprehension
978-0-618-79813-1
D
PTS: 1
DIF: Level B
REF: MLC30311
OK.PASS.MTH.02.8.1.1.b
TOP: Lesson 8.2 Linear Equations in Two Variables
line | graph | vertical | horizontal
BLM: Comprehension
978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: MALG0614
Lesson 8.2 Linear Equations in Two Variables
vertical | linear equation | graph | horizontal
BLM: Comprehension
978-0-618-79813-1
C
PTS: 1
DIF: Level A
REF: MLPA0357
Lesson 8.3 Using Intercepts
KEY: line | equation | graph | y-intercept | identify | x-intercept
Comprehension
NOT: 978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: MLPA0353
Lesson 8.3 Using Intercepts
KEY: line | equation | y-intercept | x-intercept
Comprehension
NOT: 978-0-618-79813-1
C
PTS: 1
DIF: Level B
REF: MLC30923
Lesson 8.4 The Slope of a Line
KEY: line | graph | slope
Comprehension
NOT: 978-0-618-79813-1
A
PTS: 1
DIF: Level A
REF: MLC30339
OK.PASS.MTH.02.8.4.3.a.II
TOP: Lesson 8.4 The Slope of a Line
line | slope | point | coordinate
BLM: Comprehension
978-0-618-79813-1
D
PTS: 1
DIF: Level A
REF: MLC30340
OK.PASS.MTH.02.8.4.3.a.II
TOP: Lesson 8.4 The Slope of a Line
line | slope | point | coordinate | undefined
BLM: Comprehension
978-0-618-79813-1
C
PTS: 1
DIF: Level A
REF: MLPA0363
NCTM 6-8.ALG.2.b
TOP: Lesson 8.5 Slope-Intercept Form
slope | y-intercept
BLM: Comprehension
NOT:
14. ANS:
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KEY:
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15. ANS:
TOP:
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24. ANS:
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25. ANS:
TOP:
BLM:
978-0-618-79813-1
C
PTS: 1
DIF: Level B
REF: MLPA0365
NCTM 6-8.ALG.2.b
TOP: Lesson 8.5 Slope-Intercept Form
line | slope | y-intercept
BLM: Comprehension
978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: BMGM0363
Lesson 8.5 Slope-Intercept Form
KEY: line | slope | parallel | perpendicular
Comprehension
NOT: 978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: MLPA0774
NCTM 6-8.ALG.2.b
STA: OK.PASS.MTH.02.8.1.1.b
Lesson 8.5 Slope-Intercept Form
KEY: line | equation | graph | slope-intercept
Comprehension
NOT: 978-0-618-79813-1
C
PTS: 1
DIF: Level B
REF: MPAL0021
NCTM 6-8.ALG.2.b
TOP: Lesson 8.6 Writing Linear Equations
line | equation | graph | slope-intercept
BLM: Comprehension
978-0-618-79813-1
A
PTS: 1
DIF: Level A
REF: MPAL0022
NCTM 6-8.ALG.2.b
TOP: Lesson 8.6 Writing Linear Equations
linear | equation | slope | y-intercept | slope-intercept
BLM: Comprehension
978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: MPAL0025
NCTM 6-8.ALG.2.b
TOP: Lesson 8.6 Writing Linear Equations
linear | equation | point | slope-intercept
BLM: Comprehension
978-0-618-79813-1
C
PTS: 1
DIF: Level B
REF: MPAL0027
Lesson 8.6 Writing Linear Equations
line | equation | point | parallel | slope-intercept
BLM: Comprehension
978-0-618-79813-1
D
PTS: 1
DIF: Level B
REF: MLPA0392
Lesson 8.8 Systems of Linear Equations
KEY: solve | linear | equation | graph | system
Comprehension
NOT: 978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: MLPA0399
Lesson 8.8 Systems of Linear Equations
solve | linear | equation | graph | system | inconsistent
BLM: Comprehension
978-0-618-79813-1
A
PTS: 1
DIF: Level B
REF: MPAL0032
Lesson 8.9 Graphs of Linear Inequalities
KEY: inequality | linear | solution | ordered pair
Comprehension
NOT: 978-0-618-79813-1
B
PTS: 1
DIF: Level B
REF: MLC30762
Lesson 8.9 Graphs of Linear Inequalities
KEY: inequality | linear | graph
Comprehension
NOT: 978-0-618-79813-1
B
PTS: 1
DIF: Level C
REF: MLC30757
Lesson 8.9 Graphs of Linear Inequalities
KEY: inequality | linear | graph | plane
Comprehension
NOT: 978-0-618-79813-1