Quadratic Functions Review Worksheets With Answer Key Page 3
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14Name: ________________________
ID: A
6. What is g x ( ) = (−2x + 6)(4x − 14) written in standard form?
____
g(x) = −8x
+ 28x + 8
g(x) = 2x
− 8
2
2
A
C
g(x) = −8x
+ 52x − 84
g(x) = −8x
− 84
2
2
B
D
7. What are the coordinates of the vertex of the quadratic function y = 4x
+ 8x − 2 ?
2
____
A
(–6, –1)
C
(–1, –6)
B
(8, –2)
D
(8, –6)
8. What is the function y = 2(x − 4)
− 2 written in standard form?
2
____
y = 2x
− 8x + 30
y = 2x
− 16x + 34
2
2
A
C
y = 2x
− 8x + 34
y = 2x
− 16x + 30
2
2
B
D
9. What is the equation of the quadratic function y = x
+ 24x + 29 in vertex form?
2
____
y = (x + 12)
− 173
y = (x − 12)
− 173
2
2
A
C
y = (x − 12)
− 115
y = (x + 12)
− 115
2
2
B
D
____ 10. What is the equation of the quadratic function y = x
− 26x + 41 in vertex form?
2
y = −(x + 13)
− 210
y = (x + 13)
− 128
2
2
A
C
y = −(x − 13)
− 210
y = (x − 13)
− 128
2
2
B
D
____ 11. Which quadratic function in standard form represents y = 3(x − 1)
− 25 ?
2
y = 3x
− 3x − 11
y = 3x
+ 6x − 22
2
2
A
C
y = 3x
− 6x − 22
y = 3x
− 6x − 11
2
2
B
D
____ 12. State whether the function y = 4x
− 36x − 43 has a maximum or minimum value and identify the coordinates
2
of the vertex.
maximum at (4.5, − 124)
A
C
minimum at (−124, 4.5)
minimum at (4.5, − 124)
maximum at (−124, 4.5)
B
D
____ 13. The vertex of the quadratic function y = −7 / 9
− 1 / 6
)x − 1 / 81 is
2
(
)x
(
Ê
ˆ
Ê
ˆ
−3 / 28,−31 / 9072
Á Á
˜ ˜
Á Á
˜ ˜
A
C
31 / 9072,−3 / 28
Ë
¯
Ë
¯
Ê
ˆ
Ê
ˆ
−31 / 9072,−3 / 28
Á Á
˜ ˜
Á Á
˜ ˜
B
D
3 / 28,−31 / 9072
Ë
¯
Ë
¯
3
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