1.
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
2.
Which way does the graph of
y
= –2
x
2
open?
A.
down
B.
left
C.
up
D.
right
Hint
3.
Describe the location of the line of symmetry of the graph of
y
=
x
2
– 2.
A.
there is no line of symmetry
B.
the vertical axis
C.
the line
y = x
D.
the horizontal axis
Hint
4.
Two friends are playing catch with a baseball. The ball's flight can be modeled by the equation
y
= 1 + 0.6
x
– 0.08
x
2
, in meters. What is the height of the ball at its highest point?
A.
1 m
B.
3.78 m
C.
18.8 m
D.
2.13 m
Hint
5.
Solve for
y
in terms of
x
.
xy
= 100
A.
y
= 100
x
B.
y
=
C.
y
=
D.
x
=
Hint
6.
In the relationship
, why is
y
inversely proportional to
x
?
A.
8 is divided into
y
B.
8 is divided into
x
C.
the product of
xy
is a constant, 8
D.
the relationship is undefined at
x
= 0
Hint
7.
What is true of the second differences for the equation
x
2
– 6
x
+ 12?
A.
they are constant
B.
they increase by 1
C.
they decrease by 1
D.
they increase by 12
Hint
8.
What type of relationship does the equation have if its second differences are constant?
A.
linear
B.
constant
C.
quadratic
D.
cubic
Hint