Answers 4413VA ALGEBRA 3 SEM ADomain and Range from Data

Domain and Range from Data — Unit test Answers

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Consider the function represented by the table.

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On a coordinate plane, a curved line crosses the y-axis at (0, 1), crosses the x-axis at (.25, 0), turns at point (2, negative 3), and crosses the x-axis (3.75, 0).

all the real numbers

all the real numbers greater than or equal to 0

all the real numbers greater than or equal to 2

all the real numbers greater than or equal to –3

Which set of ordered pairs represents a function?

{(2, –2), (1, 5), (–2, 2), (1, –3), (8, –1)}

{(3, –1), (7, 1), (–6, –1), (9, 1), (2, –1)}

{(6, 8), (5, 2), (–2, –5), (1, –3), (–2, 9)}

{(–3, 1), (6, 3), (–3, 2), (–3, –3), (1, –1)}

Diep buys a loaf of bread 65 centimeters long. For lunch every afternoon, he cuts 15 centimeters of bread for his sandwich. Diep wants to determine the length of the loaf of bread, l, after d days. What is the equation of the scenario? Is the graph of the equation continuous or discrete?

l = 65 – 15d; discrete

l = 65 – 15d; continuous

65 = l – 15d; discrete

65 = l – 15d; continuous

A store sells notebooks for $3 each and does not charge sales tax. If x represents the number of notebooks Adele buys and y represents the total cost of the notebooks she buys, which best describes the values of x and y?

The value of x can be any real number, and y will be a real number.

The value of x can be any real number greater than or equal to 0, and y will be a real number greater than or equal to 0.

The value of x can be any integer, and y will be an integer.

The value of x can be any integer greater than or equal to 0, and y will be an integer greater than or equal to 0.

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Domain and Range from Data — Unit test Answers

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