1.
Describe the graph.
A.
relation but not function
B.
neither a relation nor a function
C.
not a relation but a function
D.
relation and function
Hint
2.
Evaluate the function
f
(
x
) = 2
x
3
- 6
x
+ 1 for
f
(-2).
A.
5
B.
-3
C.
-35
D.
37
Hint
3.
The revenue for the sale of
x
objects is
r
(
x
) = 8
x
. The cost of manufacturing
x
objects is
c
(
x
) = 0.5
x
+ 300. Write the profit function.
A.
7.5
x
- 300
B.
8.5
x
+ 300
C.
8.5
x
- 300
D.
7.5
x
+ 300
Hint
4.
Find
(
x
) if
f
(
x
) = 3
x
2
+ 1 and
g
(
x
) = 2
x
+ 3.
A.
12
x
2
- 36
x
+ 28
B.
6
x
2
+ 5
C.
12
x
2
+ 36
x
+ 28
D.
6
x
2
- 5
Hint
5.
Write an equation in slope-intercept form for the line with a slope -3 and passes through the point (4, 2).
A.
y
= -3
x
+ 2
B.
y
= -3
x
+ 4
C.
y
= -3
x
- 8
D.
y
= -3
x
+ 14
Hint
6.
Determine whether the graphs of the pair of equations
3
x
- 2
y
= 7 and 3
x
+ 2
y
= 7
are parallel, coinciding, or neither.
A.
all are correct
B.
parallel
C.
neither
D.
coinciding
Hint
7.
What type of relationship or pattern does the scatter plot suggest?
A.
a linear relationship whose data have a positive relationship
B.
a linear relationship whose data have a negative relationship
C.
none of these
D.
no pattern
Hint
8.
The stated weight of the box of soap is 8.3 ounces. The company randomly chooses boxes to test to see whether their equipment is dispensing the right amount of product. If the discrepancy is more than 0.15 ounce, the production line is stopped for adjustments. Identify the type of function that models this situation.
A.
step function
B.
absolute value function
C.
a straight line
D.
greatest integer function
Hint
9.
Which is the graph of the inequality
x
+ 2
y
- 2
0?
A.
B.
C.
D.
Hint
10.
An automobile manufacturer produces two kinds of cars--the Bobcat
x
and the Lion
y
. The company must always produce twice as many Bobcats as Lions and at least 300 cars but no more than 1200 cars per day. Model this situation algebraically.
A.
300
x
+ 2
y
1200 and
x
= 2
y
B.
300
x
+
y
1200 and
x
= 2
y
C.
300
x
+ 2
y
1200
D.
300
2
x
+
y
1200
Hint
11.
Graph the equation 3
x
+ 2
y
= 0
A.
B.
C.
D.
Hint
12.
Which function does not have a zero?
A.
f
(
x
) =
x
- 5
B.
f
(
x
) = 3
x
+ 5
C.
f
(
x
) = -5
D.
f
(
x
) = –5
x
+3
Hint
13.
Find a linear equation that can be used as a model for the data shown.
A.
B.
C.
D.
Hint
14.
Determine the equation of the perpendicular bisector of the line segment with endpoints (1,5) and (-6, 3).
A.
14
x
+ 4
y
+ 19 = 0
B.
2
x
+ 7
y
+ 23 = 0
C.
14
x
+ 4
y
- 19 = 0
D.
2
x
+ 7
y
- 23 = 0
Hint
15.
What type of relationship does the scatter plot suggest?
A.
a linear relationship with a positive correlation
B.
a linear relationship with a negative correlation
C.
no linear relationship
D.
no correlation
Hint
16.
What is the value of
y
when
x
= 2?
A.
0
B.
1
C.
undefined
D.
2
Hint