Analyzing Graphs — Unit test Answers

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What is the axis of symmetry for the function f(x)=7−4x+x2?

A
x = –3
B
x = –2
C
x = 2
D
x = 3
23
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Which translation maps the graph of the function f(x) = x2 onto the function g(x) = x2 + 2x + 6?

A
left 1 unit, up 5 units
B
right 1 unit, up 5 units
C
left 2 units, up 2 units
D
right 2 units, up 2 units
24

Which equation represents a graph with a vertex at (–3, 2)?

A
y = 4x2 + 24x + 38
B
y = 4x2 – 24x + 38
C
y = 4x2 + 12x + 2
D
y = 4x2 + 16x + 13
25

Consider the function shown on the graph.

Question illustration
A
f(x) = (x + 3)(x + 7)
B
f(x) = (x – 3)(x – 7)
C
f(x) = 3(x – 3)(x – 7)
D
f(x) = 11(x + 3)(x + 7)

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