1.
Which function has a graph that opens upward?
A.
f
(
x
) = 2
x
2
- 5
x
- 2
B.
f
(
x
) = -
x
2
+ 4
x
+ 7
C.
f
(
x
) = -
x
2
+ 3
x
-12
D.
f
(
x
) = -5
x
2
-6
x
-3
Hint
2.
Find the vertex of the graph of the function
f
(
x
) =
x
2
- 6
x
+ 5.
A.
(3, -4)
B.
(-6, 5)
C.
(3, 4)
D.
(-3, 4)
Hint
3.
Find the axis of symmetry of the graph of
f
(
x
) = 4
x
2
-4
x
+ 4.
A.
y
= 3
B.
x
= 4
C.
x
= 2
D.
x
=
Hint
4.
Find an equation for the parabola shown in the graph.
A.
y
= (
x
+ 2)
2
- 4
B.
y
=
(
x
+ 2)
2
- 4
C.
y
= (
x
- 2)
2
+ 4
D.
y
=
(
x
- 2)
2
- 4
Hint
5.
Choose the equation of the parabola that passes through the points at
(-2, 3), (0, 7), and (1, 15).
A.
y
=
x
2
+ 3
x
+ 7
B.
y
= -
x
2
- 5
x
+ 2
C.
y
= 2
x
2
+ 6
x
+ 7
D.
y
= 3
x
2
-
x
+ 7
Hint