1.
Determine the slope of the line graphed below.
A.
B.
0
C.
D.
Hint
2.
The table shows the possible lengths and widths of a rectangle that has an area of 72 square centimeters. Make a scatter plot of the data.
A.
B.
C.
D.
Hint
3.
Find (
x
+ 3)(
x
- 5).
A.
x
2
+ 2
x
- 15
B.
x
2
+ 8
x
- 15
C.
x
2
- 15
D.
x
2
- 2
x
- 15
Hint
4.
Find (4
y
- 5)(3
y
- 7).
A.
12
y
2
– 43
y
- 35
B.
12
y
2
– 13
y
+ 35
C.
12
y
2
+ 35
D.
12
y
2
– 43
y
+ 35
Hint
5.
Solve the equation
x
2
= 0.81.
A.
x
= 0.9 only
B.
none of these is correct
C.
x
= 0.9 or
x
= -0.9
D.
x
= -0.9 only
Hint
6.
State the excluded values of
a
and
b
in the expression
.
A.
B.
C.
D.
Hint
7.
Find
.
A.
2
B.
C.
D.
Hint
8.
Find
.
A.
B.
C.
D.
Hint
9.
Find (
x
+ 7)(2
x
+1).
A.
2
x
2
+ 7
x
+ 7
B.
2
x
2
+ 15
x
+ 7
C.
2
x
2
+ 14
x
+ 7
D.
2
x
2
+ 9
x
+ 7
Hint
10.
Which characteristic describes a graph that is linear and has direct variation.
A.
The graph does not pass through (0, 0).
B.
The equation has the form
y
=
mx
+
b
.
C.
Variables
x
and
y
are not proportional.
D.
The equation has the form
y
=
mx
.
Hint
11.
Find the equation that is nonlinear.
A.
y
= 14 + 6
x
B.
y
= –3
x
– 1
C.
y
= 4
y
2
D.
y
= 8 –
x
Hint
12.
Find the table that represents a graph with direct variation.
A.
B.
C.
D.
Hint
13.
Solve for
y
in terms of
x
.
xy
= 100
A.
x
=
B.
y
=
C.
y
= 100
x
D.
y
=
Hint
14.
Find a solution to the equation using backtracking.
A.
n
= 10
B.
n
= –12
C.
n
= –89
D.
n
= –100
Hint
15.
Use the distributive property to expand the expression.4
a
(2 + 7
a
)
A.
8
a
+ 28
a
2
B.
6
a
+ 28
a
2
C.
8
a
+
a
2
D.
8 + 28
a
2
Hint
16.
Expand the expression.(3
z
+
n
) >
2
A.
9
n
2
+ 6
m
+
m
>
2
B.
9
m
2
+ 6
m
n
+
n
>
2
C.
9
m
2
+
n
>
2
D.
9
n
>
2
+ 6
n
+
m
>
2
Hint
17.
Expand the expression.(2
s
+ 6)(2
s
– 6)
A.
4
s
2
– 36
B.
4
s
2
– 24
s
– 36
C.
4
s
2
+ 36
D.
4
s
2
+ 24
s
– 36
Hint
18.
Find the solutions of the equation.4
y
2
– 16 = 0
A.
y
=
and
y
=
B.
y
= 2 and
y
= –2
C.
y
=
and
y
=
D.
y
= –2 and
y
= –2
Hint
19.
Rewrite the expression as a square with a constant added or subtracted.
x
2
– 6
x
– 15
A.
(
x
– 3)
2
– 15
B.
(
x
– 3)
2
– 24
C.
(
x
– 3)
2
– 9
D.
(
x
– 3)
2
+ 9
Hint
20.
In the quadratic formula, what does
b
2
– 4
ac
tell you.
A.
the vertex of a quadratic equation
B.
the solution(s) in a quadratic equation
C.
the number of solutions in a quadratic equation
D.
the places where a quadratic equation crosses the
x
-axis
Hint