Introduction to Functions Answers

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

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A
all real numbers
B
all real numbers greater than or equal to 0
C
all real numbers greater than or equal to –2
D
all real numbers greater than or equal to –3
2
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A 2-column table with 4 rows. The first column is labeled x with entries negative 5, 1, 4, 6. The second column is labeled y with entries 9, 0, negative 7, negative 1.

Question illustration
A
{x | x = –5, 1, 4, 6}
B
{y | y = –7, –1, 0, 9}
C
{x | x = –7, –5, –1, 0, 1, 4, 6, 9}
D
{y | y = –7, –5, –1, 0, 1, 4, 6, 9}
3

Which table represents a function?

A
Option
B
Option
C
Option
D
Option
4

On a coordinate plane, a line with a 90-degree angle crosses the x-axis at (negative 4, 0), turns at (negative 1, 3), crosses the y-axis at (0, 2) and the x-axis at (2, 0).

Question illustration
A
all real numbers
B
all real numbers less than or equal to –1
C
all real numbers less than or equal to 3
D
all real numbers less than or equal to 0

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