AnswersAlgebra IIntroduction to Functions

Pretest Answers

10 verified answers1 views
1
Free Preview

What is the range of this function?

A
all real numbers such that 0 is less than or equal to y comma y is less than or equal to 40
B
all real numbers such that y is greater than or equal to 0
C
all real numbers such that y is less than or equal to 40
D
all real numbers such that 37 point 7 5 is less than or equal to y comma y is less than or equal to 40
2
Free Preview

What is the range of the function?

A
all integers greater than or equal to 11
B
all real numbers greater than or equal to 11
C
all real numbers
D
all real numbers greater than or equal to 0
3

The table shows ordered pairs of the function y=8−2⁢x. What is the value of y when x=8? x y negative 3 14 negative 1 10 1 6 4 0 8 ? 10 negative 12

A
48
B
8
C
negative 20
D
negative 8
4

What is the range of the given function? start set negative 2 comma 0 comma negative 4 comma negative 3 comma 2 comma negative 9 comma 0 comma 5 comma negative 5 comma 7 end set

A
start set y such that y is equal to negative 9 comma negative 5 comma negative 4 comma negative 3 comma negative 2 comma 0 comma 2 comma 5 comma 7 end set
B
start set x such that x is equal to negative 9 comma negative 5 comma negative 4 comma negative 3 comma negative 2 comma 0 comma 2 comma 5 comma 7 end set
C
start set y such that y is equal to negative 9 comma negative 3 comma 0 comma 5 comma 7 end set
D
start set x such that x is equal to negative 5 comma negative 4 comma negative 2 comma 0 comma 2 end set
5

Which table represents a function?

A
Table with 2 columns and 5 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, 'negative 3'; Column 2, 'negative 1' Row 3: Column 1, '0'; Column 2, '0' Row 4: Column 1, 'negative 2'; Column 2, 'negative 1' Row 5: Column 1, '8'; Column 2, '1'
B
Table with 2 columns and 5 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, 'negative 4'; Column 2, '8' Row 3: Column 1, 'negative 2'; Column 2, '2' Row 4: Column 1, 'negative 2'; Column 2, '4' Row 5: Column 1, '0'; Column 2, '2'
C
Table with 2 columns and 5 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, 'negative 5'; Column 2, 'negative 5' Row 3: Column 1, '0'; Column 2, '0' Row 4: Column 1, 'negative 5'; Column 2, '5' Row 5: Column 1, '6'; Column 2, 'negative 6'
D
Table with 2 columns and 5 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, 'negative 4'; Column 2, '2' Row 3: Column 1, '3'; Column 2, '5' Row 4: Column 1, '1'; Column 2, '3' Row 5: Column 1, 'negative 4'; Column 2, '0'
6

To bill customers for water usage, one city converts the number of gallons used into units. This relationship is represented by the equation u=748⁢g, where g is the total number of gallons of water used and u is the number of units. Determine which statements about the relationship are true. Choose two correct answers.

A
The two variables cannot be labeled as independent or dependent without a table of values.
B
u is the dependent variable.
C
g is the independent variable.
D
g is the dependent variable.
E
u is the independent variable.
7

Contestants in a cooking competition have flour available for use. The number of cups of flour available for use decreases by 8 cups every 6 minutes. There are 32 cups of flour to begin with. Use an inequality to show an appropriate domain for this situation. Enter your answers in the boxes.

Answer:

0|24

8

Which graph shows a set of ordered pairs that represents a function?

A
Image with description A coordinate plane with a horizontal axis labeled x and a vertical axis labeled y. The scale on both axes ranges from negative 5 to 5 with an interval of 1 unit. The graph consists of 6 plotted points located at negative 4 comma 2, negative 1 comma 4, 1 comma 0, 2 comma 3, 2 comma negative 3, and 3 comma 1.
B
Image with description A coordinate plane with a horizontal axis labeled x and a vertical axis labeled y. The scale on both axes ranges from negative 5 to 5 with an interval of 1 unit. The graph consists of 6 plotted points located at negative 5 comma 2, negative 4 comma negative 4, negative 3 comma 4, negative 2 comma 2, 2 comma negative 2, and 4 comma 3.
C
Image with description A coordinate plane with a horizontal axis labeled x and a vertical axis labeled y. The scale on both axes ranges from negative 5 to 5 with an interval of 1 unit. The graph consists of 6 plotted points located at negative 5 comma 4, negative 3 comma 2, negative 1 comma 3, 1 comma 1, 1 comma negative 2, and 3 comma negative 3.
D
Image with description A coordinate plane with a horizontal axis labeled x and a vertical axis labeled y. The scale on both axes ranges from negative 5 to 5 with an interval of 1 unit. The graph consists of 6 plotted points located at negative 4 comma 2, negative 3 comma 4, negative 3 comma negative 4, negative 2 comma 1, 2 comma negative 3, and 3 comma negative 1.
9

What is the domain of the given function? start set 3 comma negative 2 comma 6 comma 1 comma negative 1 comma 4 comma 5 comma 9 comma negative 4 comma 0 end set

A
start set x such that x is equal to negative 4 comma negative 1 comma 3 comma 5 comma 6 end set
B
start set x such that x is equal to negative 4 comma negative 2 comma negative 1 comma 0 comma 1 comma 3 comma 4 comma 5 comma 6 comma 9 end set
C
start set y such that y is equal to negative 2 comma 0 comma 1 comma 4 comma 9 end set
D
start set y such that y is equal to negative 4 comma negative 2 comma negative 1 comma 0 comma 1 comma 3 comma 4 comma 5 comma 6 comma 9 end set
10

What is the range of the given function?

A
start set y such that y is equal to negative 7 comma negative 5 comma negative 1 comma 0 comma 1 comma 4 comma 6 comma 9 end set
B
start set y such that y is equal to negative 7 comma negative 1 comma 0 comma 9 end set
C
start set x such that x is equal to negative 7 comma negative 5 comma negative 1 comma 0 comma 1 comma 4 comma 6 comma 9 end set
D
start set x such that x is equal to negative 5 comma 1 comma 4 comma 6 end set

Did you find these answers helpful?

More from this Course

lesson pretest
10 verified answers

Pretest

lesson pretest
10 verified answers

Pretest

lesson pretest
10 verified answers

Pretest