Unit Test — Unit test Answers
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If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?
A
6 – 3 – (4 + 3)2B
6 – 3 – (4 – 32)C
6(3) – 4 + 32D
6(3) – 4 – 3224
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If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?
A
y = StartFraction 48 Over 6 EndFraction (2)
B
y = StartFraction 6 Over 48 EndFraction (2)
C
y = StartFraction (48) (6) Over 2 EndFraction
D
y = StartFraction 2 Over (48) (6) EndFraction
25
Which graph represents an odd function?
A
On a coordinate plane, a function has two curves. The first curve is in quadrants 2 and 3 and has a minimum value of (negative 1, negative 3). The curve intersects the x-axis at (negative 2, 0) and goes to (0, 0). The second curve is in quadrants 1 and 4 and has a minimum value of (1, negative 3). The curve starts at (0, 0) and intercepts the x-axis at (2, 0).
B
On a coordinate plane, a curved line crosses the x-axis at (negative 4, 0), (0, 0), and (4, 0).
C
On a coordinate plane, a v-shaped function opens up. The function goes through (0, 2), has a vertex at (2, 0), and goes through (5, 3).
D
On a coordinate plane, a curve has a maximum point at (0.5, 1) and a minimum point at (2, 0). The curve goes through points (0, 0) and (3, 4).
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