1.
Which graph represents a function?
A.
B.
C.
D.
Hint
2.
Find the coordinates of the vertex of the graph of the equation
y
= -3
x
2
- 12
x
- 5.
A.
(-2, 7)
B.
(2, -41)
C.
(1, -20)
D.
(-4, -5)
Hint
3.
A flare is shot up into the sky modeling the formula
h
(
t
) = 2 + 144
t
– 16
t
2
, where h is in feet and t is in seconds. About how long was the flare in the air?
A.
2.5 seconds
B.
5 seconds
C.
4.5 seconds
D.
9 seconds
Hint
4.
Find the
x
-intercepts of the graph of
f
(
x
) =
x
2
– 2
x
– 3.
A.
1, –4
B.
–1, 4
C.
–1, 3
D.
1, –3
Hint