1.
Determine the slope of the line that passes through (2, 2) and (5, 8).
A.
B.
2
C.
-2
D.
Hint
2.
Which equation is the slope-intercept form of the equation of the line that passes through (1, 2) and is parallel to 4
x
- 2
y
= 6?
A.
B.
y
= 2
x
C.
y
= 4
x
+ 3
D.
y
= -2
x
+ 1
Hint
3.
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
4.
Find
A.
B.
C.
D.
Hint
5.
Solve the equation
x
2
= 0.81.
A.
none of these is correct
B.
x
= 0.9 or
x
= -0.9
C.
x
= -0.9 only
D.
x
= 0.9 only
Hint
6.
If a rocket is fired from the ground with an initial velocity of 75 meters per second, then the height of the rocket after
t
seconds is
h
= 75
t
- 4.9
t
2
. Find the height of the rocket after 3 seconds.
A.
180.9 meters
B.
221.6 meters
C.
130.4 meters
D.
252.5 meters
Hint
7.
What is the equation of the graph shown?
A.
y
= -
x
2
+2
x
- 1
B.
y
= -
x
2
- 2
x
- 1
C.
y
=
x
2
- 2
x
+ 1
D.
y
=
x
2
+ 2
x
+ 1
Hint
8.
Simplify
.
A.
B.
C.
D.
Hint
9.
Find the graph that does not have direct variation.
A.
B.
C.
D.
Hint
10.
Find the graph that is nonlinear.
A.
B.
C.
D.
Hint
11.
Pam's mother gives Pam $20 each week for lunch to be bought at the school cafeteria. Lunches cost $4 per day. Draw a graph showing the amount Pam has left decreasing very slowly. Suppose you graph the time in days on the horizontal axis and the amount Pam has left on the vertical axis.
A.
B.
C.
D.
Hint
12.
What is the equation of a line that has a slope of 3 and passes through (–4, –3)?
A.
y
= 3
x
– 9
B.
y
= 3
x
+ 3
C.
y
= 3
x
+ 9
D.
y
= 3
x
– 3
Hint
13.
Write the equation in slope-intercept form.
–6
x
= –10 – 2
y
A.
y
= 3
x
– 5
B.
y
+ 8 = 3(
x
+ 1)
C.
–6
x
+ 2
y
+ 10 = 0
D.
y
= 3
x
+ 8
Hint
14.
How many diagonals are connected to each vertex for a 25-sided polygon?
A.
20
B.
25
C.
21
D.
22
Hint
15.
What is the new equation if the graph
y
= 2
x
3
– 6
x
2
is moved down 1 unit?
A.
y
= 2
x
3
– 6
x
2
– 1
B.
y
= 2
x
3
– 5
x
2
C.
y
=
x
3
– 6
x
2
D.
y
= 2
x
3
– 6
x
2
+ 1
Hint
16.
How does
b
affect graphs of equations in the form of
?
A.
b
affects the length of the graph
B.
positive values of
b
move the graph to the left, negative values move it to the right
C.
b
affects the width of the graph
D.
negative values of
b
move the graph to the left, positive values move it to the right
Hint
17.
What is true of the second differences for the equation
x
2
– 6
x
+ 12?
A.
they decrease by 1
B.
they are constant
C.
they increase by 1
D.
they increase by 12
Hint
18.
Which number is not equal to the other three?
A.
B.
C.
D.
2
-2
Hint
19.
The population of fish in Mark's lake is 500 this year. If the population increases by 6.9% a year, what number can Mark multiply this year's population by to estimate the fish population in the lake next year?
A.
0.0931
B.
1.069
C.
6.9
D.
1.69
Hint
20.
Which curve represents exponential decay?
A.
curve
b
B.
curve
d
C.
curve
a
D.
curve
c
Hint