Pre Assessment Quadratic Unit Worksheet Page 2

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2
3 If an object is dropped from a height of 39 feet, the function h(t) = −16t
+ 39 gives the
____
height of the object after t seconds. Graph the function.
A
C
B
D
4 Find the equation of the axis of symmetry and the coordinates of the vertex of the
____
graph of
2
y = 4x
+ 5x − 1
Ê
ˆ
Ê
ˆ
Á Á
˜ ˜
Á Á
˜ ˜
5
5
5
5
5
11
Á Á
˜ ˜
Á Á
˜ ˜
A x =
; vertex:
, 4
C x = −
; vertex: −
, − 5
Á Á
˜ ˜
Á Á
˜ ˜
8
8
8
8
8
16
Ë
¯
Ë
¯
Ê
ˆ
Ê
ˆ
Á Á
˜ ˜
Á Á
˜ ˜
5
5
11
5
5
9
Á Á Á
˜ ˜ ˜
Á Á
˜ ˜
, − 2
B x =
; vertex:
, 3
D x = −
; vertex: −
Á Á
˜ ˜
Á Á
˜ ˜
8
8
16
8
8
16
Ë
¯
Ë
¯
Page 13

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