Completing the Square (Continued) Answers

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What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?

A
Factor out 3 from each term.
B
Form a perfect square trinomial by keeping the value of the function equivalent.
C
Write the trinomial as a binomial squared.
D
Factor out 3 from the first two terms.
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(–3, –45), minimum(–3, 45), maximum(3, –45), minimum(3, 45), maximum

A
(–3, –45), minimum
B
(–3, 45), maximum
C
(3, –45), minimum
D
(3, 45), maximum
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x = –45x = –3x = 3x = 45

A
= –45
B
= –3
C
= 3
D
= 45
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2346

A
2
B
3
C
4
D
6
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241224

A
2
B
4
C
12
D
24
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372124

A
3
B
7
C
21
D
24
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Compare the graphs that Jennifer and Matt drew by completing the statements.

Answers:
Jennifer’s graph is vertically shifted from Matt’s graph.:2 units down
Jennifer’s graph is horizontally shifted from Matt’s graph.:0 units left or right
Jennifer’s graph is Matt’s graph.:the same shape as
Which graph has a vertex that is a maximum?:Neither Jennifer’s nor Matt’s
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0 units left or right1 unit left1 unit right

A
0 units left or right
B
1 unit left
C
1 unit right
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narrower than wider than the same shape as

A
narrower than
B
wider than
C
the same shape as
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Jennifer’sMatt’sNeither Jennifer’s nor Matt’s

A
Jennifer’s
B
Matt’s
C
Neither Jennifer’s nor Matt’s

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