Analyzing Functional Relationships — Unit test Answers
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The function f(x) = −(x + 5)(x + 1) is shown.
A
all real numbers less than or equal to 4B
all real numbers less than or equal to −3C
all real numbers greater than or equal to 4D
all real numbers greater than or equal to −322
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Mary throws a plastic disc to her friend. Her friend catches the disc six seconds after Mary throws it. The table shows the height of the disc at one-second intervals.
A
A = 5, B = 3B
A = 4, B = 0C
A = 4, B = 3D
A = 5, B = 023
What are the x-intercepts of the function f(x) = –x2 – x + 2?
A
(–2, 0) and (1, 0)B
(2, 0) and (1, 0)C
(–2, 0) and (-1, 0)D
(0, -2) and (0, 1)24
On a coordinate plane, a parabola opens down. It has an x-intercept at (negative 5, 0), a vertex at (negative 1, 16), a y-intercept at (0, 15), and an x-intercept at (3, 0).
A
The domain is all real numbers. The range is {y|y < 16}.B
The domain is all real numbers. The range is {y|y ≤ 16}.C
The domain is {x|–5 < x < 3}. The range is {y|y < 16}.D
The domain is {x|–5 ≤ x ≤ 3}. The range is {y|y ≤ 16}.25
A 2-column table with 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 3, negative 2, negative 3, 0, 7.
A
one-fifth
B
4C
5D
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