1.
Which function has a graph that opens upward?
A.
f
(
x
) = -
x
2
+ 3
x
-12
B.
f
(
x
) = -
x
2
+ 4
x
+ 7
C.
f
(
x
) = -5
x
2
-6
x
-3
D.
f
(
x
) = 2
x
2
- 5
x
- 2
Hint
2.
Find the axis of symmetry of the graph of
f
(
x
) = 4
x
2
-4
x
+ 4.
A.
x
= 2
B.
y
= 3
C.
x
= 4
D.
x
=
Hint
3.
Find the vertex of the graph of the function
.
A.
(–1, –2)
B.
(1, 4)
C.
(1, –2)
D.
(–1, 4)
Hint
4.
Which graph of the following functions will be strictly above the graph of
?
A.
B.
C.
D.
Hint
5.
Find the axis of symmetry of the following function:
A.
x
= 7
B.
x
= –7
C.
x
=
D.
x
=
Hint