11-25 Unit 4 Exam

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Good Luck to©_____________________ Period_ _ Date________
126
ALGEBRA I Unit 4
All questions are worth 2 pts each. Must show
work to receive full credit.
+3 &tifWlJ
3. What is the solution set of
lJ2x + 11 = 27?
~
A. {-5}
1. Some fire extinguishers contain pressurized
water. The water pressure should be 162.5
psi (pounds per square inch), but it is
acceptable for the pressure to differ from this
value by at most 12.5 psi. Write an absolute
value inequality to find the range of
acceptable pressures.
Lx+/~q
.\ -
B. {4}
~
ZX+l:::-Q
-
-{
\
e
LX. :.. -rtQ
= 4-
x.::-<;
ceJ-5, 4D
LX ~
D. {4, 5} A
A. Ip-12.51~162.5
B. Ip-12.51 ~162.5
+ZC=Z Ip-162.51~12.5 ~
D.
Ip-162.51~12.5
4. Sierra's car can travel between 425 and 455 miles
on a full tank of gas. She filled her gas tank and
drove 45 miles. How many more miles can she
drive without running out of gas?
2. What is the solution set of
18x - 31 = 13?
aJX
_"2 ~ I~
()
;J
+3
,~
l3x= I~
D.
COx --r-'!.'3 ::: -Is
1'3
aX. ~laJ
A.
425 ~ d ~ 455
B. 470~d~500
cr!86:-d~ 410~
D. d
~ 380
or d
~ 410
{2} 5. Given
G
/(x)=5x-2.
18 ~
B. 54
C. 20x - 2
D. 20x-8
What is /(4)? ~(4-) - 2.
~-L-
8. 6. What is the range of the following relation?
{( 3,5), (-2,8), (5,1), (-3, -I)}
4
5
17 20
~
23
26
2
( fU; 14
A. {3, 5, -2, 8, 5, 1,-3,-1}
CS~, 1, iY
3
1
11.
S I ~ I t, - \
3
3
C. {-3, -2,3, 5}
What function best describes the information given
in the table.
D.{-4, 6, 6, 8}
A.
7. The graph shows a line segment.
fen
=3_+_1J ~
B. f(n)=11+3n
P(k)
_
C. f(n)=14+17n
(28, 30)
D. f(n)=17-3n
~ -l~
/ ~
(12,18)
9. A gym charges a $30 registration fee plus $15
per month for a membership. The graph
illustrates the total cost of a membership for a
given number of months.
k
Which equation best describes the slope of
the line segment?
~.
y
210
180 .
m=l
'-____________4__~__----
150
Bm¥
120 9060 .
c.m~
D.
.
30
.• •
u
•
•
•
•
•
•
•
•
&
12 3 4 5 6 7 8 9101112 x
4
m=
3
What would happen to the graph if the gym
eliminated the $30 registration fee?
,....-
A.
The slope would decrease.
B.
The slope would increase.
C.
The graph wauld translate up.
D.
The graph would translate down.
-.......,. "'\
I
2
J.
Use the graph below.
12. Which equation below, in paint-slope form,
represents the line that passes through the
y
point
5-
1!
4·
J
2\.
Js
.4 ~
~ -1
1-
-2-
-
-_. -
.
- - 3
""
,
11
-
}-
i
~
!,L
V
-h;( A ~
/
x
J
(-1,2)
with a slope of 3?
A.
y-I ===3( x+2)
B.
y+I===3(x -2)
C.
y-2=3(x+I) ~
D.
y+2 =3( x-l)
What is the equation of the line in the graph?
B.
=4
-2x + y =4
c.
x~
A.
-x -
b~
2y
~v i".,
-4
13.
h1 ~ 2
~J
4'~
~'5
..
~ <: rL +r-O )
r c+;i ~ (?Wi h <: r(c+O))
u
4
1~
C
-2X+'j~-+ -
1(.. (~v
-Ppr'L.
e)the following inequality for n, where r is a
egative number.
<"--0
y-(c.f{D)~
BON
h
ttl"
:
11. Which equation in standard form is equivalent to Given the two paints: (4,-5) and (6, 10) ~
1(9-12
y-5===-3(x+2)?
A.
3x + Y === 11
B. 3x+ y
C.
===
7
3x+ Y === 0
~+F!)
v-$' ~ ~3X-0
7 f-)
T
Write the equation that passes through the two points in: +-5
~I I
~~ -3~-\
3Xry~-)
(O~
•
IS ____
PoinF slope form:
-t
')+S'"
~-lC9::: ~ ( X-6')
' Io~m"'"':----- 2~41lY
\j =. ~)(.-
~I
Standar form:
3
li(X-4)
35
= (5'>(-"~
- t(!)
'2.'j
:=
IS X- 7<:0
- (S'" +-'L~ -=- -7(9
?J@

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