Unit Test Answers

25 verified answers
21
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Which phrase best describes the translation from the graph y = (x + 2)2 to the graph of y = x2 + 3?

A
2 units left and 3 units up
B
2 units left and 3 units down
C
2 units right and 3 units up
D
2 units right and 3 units down
22
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What is the first step when rewriting y = 6x2 + 18x + 14 in the form y = a(x – h)2 + k?

A
16 must be factored from 18x + 14
B
x must be factored from 6x2 + 18x
C
6 must be factored from 6x2 + 14
D
6 must be factored from 6x2 + 18x
23

Christian is rewriting an expression of the form y = ax2 + bx + c in the form y = a(x – h)2 + k. Which of the following must be true?

A
h and k cannot both equal zero
B
k and c have the same value
C
the value of a remains the same
D
h is equal to one half –b
24

Which of the following is the inverse of ?

Question illustration
A
y = log Subscript 6 Baseline x
Option A
B
y = log Subscript x Baseline 6
Option B
C
y = log Subscript one-sixth Baseline x
Option C
D
y = log Subscript 6 Baseline 6 x
Option D
25

Which set of ordered pairs could be generated by an exponential function?

A
, (0, 0), , (2, 1)
Option A
B
(–1, –1), (0, 0), (1, 1), (2, 8)
C
, (0, 1), (1, 2), (2, 4)
Option C
D
(–1, 1), (0, 0), (1, 1), (2, 4)

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