Step Functions — Unit test Answers
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Nina graphs the function y=⌊x⌋ to learn the properties of the parent floor function.What is the value of y when x=5.7?
A
5B
5.50C
5.75D
622
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The piecewise function h(x) is shown on the graph.
A
−7B
−1C
0D
223
Use the graphing calculator to graph the function f(x) = –. Which list contains three points that lie on the graph of the function?
A
(–9, 3), (–4, 2), (–1,1)B
(1,1), (4, 2), (9, 3)C
(–9, –3), (–4, –2), (–1,–1)D
(1,–1), (4, –2), (9, –3)24
On a coordinate plane, an absolute value graph has a vertex at (negative 2, 1).
A
Both h and k must be positive.B
Both h and k must be negative.C
h must be positive and k must be negative.D
h must be negative and k must be positive.25
Which is the graph of the step function f(x)?f(x) =
A
On a coordinate plane, a piecewise function has 3 lines. The first line has an open circle at (negative 3, negative 1) and continues horizontally to an open circle at (negative 1, negative 1). The second line has a closed circle at (negative 1, 0) and continues horizontally to a closed circle at (1, 0). The third line has an open circle at (1, 1) and continues horizontally to an open circle at (3, 1).
B
On a coordinate plane, a piecewise function has 3 lines. The first line has an open circle at (negative 1, negative 1) and continues horizontally to the left at y = negative 1. The second line has a closed circle at (negative 1, 0) and continues horizontally to a closed circle at (1, 0). The third line has an open circle at (1, 1) and continues horizontally to the right at y = 1.
C
On a coordinate plane, a piecewise function has 3 lines. The first line has a closed circle at (negative 1, negative 1) and continues horizontally to the left at y = negative 1. The second line has an open circle at (negative 1, 0) and continues horizontally to an open circle at (1, 0). The third line has a closed circle at (1, 1) and continues horizontally to the right at y = 1.
D
On a coordinate plane, a piecewise function has 3 lines. The first line has an open circle at (negative 3, negative 1) and continues horizontally to an open circle at (negative 1, negative 1). The second line has an open circle at (negative 1, 0) and continues horizontally to an open circle at (1, 0). The third line has an open circle at (1, 1) and continues horizontally to an open circle at (3, 1).
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