Reflections of Exponential Functions — Unit test Answers
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21
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Which exponential function has an initial value of 2?
A
f(x) = 2(3x)B
On a coordinate plane, an exponential function approaches y = 0 in quadrant 2 and increases into quadrant 1. It crosses the y-axis at (0, 0.5) and goes through (2, 2).
C
f(x) = 3(2x)D
A 2-column table has 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f (x) with entries one-eighth, one-fourth, one-half, 1, 2.
22
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What is the domain of f(x) = 5x – 7?
{
{x | x > –7}{
{x | x < –7}{
{x | x > 0}{
{x | x is a real number}23
Which steps will translate f(x) = 3x to g(x) = 3x + 1 + 4?
A
Shift f(x) = 3x one unit up and four units to the right.B
Shift f(x) = 3x one unit up and four units to the left.C
Shift f(x) = 3x one unit to the right and four units up.D
Shift f(x) = 3x one unit to the left and four units up.24
What kind of growth model (pattern) is shown in the table? xy152253125462553,125
A
square rootB
linearC
exponentialD
quadratic25
The table below represents a function. x12345y116642561,024 Which statement would best describe the graph of the function?
A
The graph is a straight line that has a slope of 8.B
The graph is a horizontal line at y = 16.C
The graph starts flat but curves steeply upward.D
The graph is a parabola that opens upward.Did you find these answers helpful?
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