1.
Find the vertex of the graph of
f
(
x
) =
x
2
+ 4
x
- 5.
A.
(2, 7)
B.
(0, -5)
C.
(-2, 9)
D.
(-2, -9)
Hint
2.
Determine whether
f
(
x
) = –
x
2
– 3
x
+ 4 has a maximum or a minimum.
A.
both
B.
cannot be determined from given information
C.
maximum
D.
minimum
Hint
3.
What is the
y
-intercept of the function
y
= 2
x
2
+ 1
A.
3
B.
1
C.
none
D.
0
Hint
4.
Find the minimum value of
.
A.
2
B.
11
C.
7
D.
(2, 7)
Hint
5.
Which of the following graphs best represents the function
y
= –
x
2
+ 7
x
+ 8?
A.
B.
C.
D.
Hint