Introduction to Quadratic Functions — Unit test Answers
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21
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Which quadratic function is the standard form of the equation shown?f(x) = x + 8 + 2x + 5x2
A
f(x) = 8 + 5x2 + 2x + xB
f(x) = x + 2x + 5x2 + 8C
f(x) = 8 + 3x + 5x2D
f(x) = 5x2 + 3x + 822
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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 −323
Which is the graph of f(x) = x2 – 2x + 3?
A
On a coordinate plane, a parabola opens up. It goes through (0, 3), has a vertex at (1, 2), and goes through (2, 3).
B
On a coordinate plane, a parabola opens up. It goes through (negative 2, 3), has a vertex at (negative 1, 2), and goes through (0, 3).
C
On a coordinate plane, a parabola opens up. It goes through (0, 3), has a vertex at (2, negative 1), and goes through (4, 3).
D
On a coordinate plane, a parabola opens up. It goes through (negative 4, 3), has a vertex at (negative 2, negative 1), and goes through (0, 3).
24
Which is one of the transformations applied to the graph of f(x) = x2 to change it into the graph of g(x) = 4x2 + 24x + 30?
A
The graph of f(x) = x2 is widened.B
The graph of f(x) = x2 is shifted left 3 units.C
The graph of f(x) = x2 is shifted up 30 units.D
The graph of f(x) = x2 is reflected over the x-axis.25
Which is one of the transformations applied to the graph of f(x)=x2 to change it into the graph of g(x) = –x2 + 16x – 44?
A
The graph of f(x) = x2 is widened.B
The graph of f(x) = x2 is shifted left 8 units.C
The graph of f(x) = x2 is shifted down 44 units.D
The graph of f(x) = x2 is reflected over the x-axis.Did you find these answers helpful?
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