Graphing Logarithmic Functions

Question 1

Which is the graph of a logarithmic function?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/EVresources/3111-10-03-20-01-task/mc001-3.jpg

Question 2

Which is the graph of f(x) = log3x?

Revolt · Accepted Answer

On a coordinate plane, a logarithmic function approaches the y-axis in quadrant 4 and then increases into quadrant 1 and approaches y = 2. It goes through (1, 0) and (3, 1).

Question 3

Which function is shown in the graph?

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/EVresources/3111-10-03-20-03-task/mc001-3.jpg

Question 4

What is the domain of the function? What is the range of the function?

Revolt · Accepted Answer

x > 0; Selection 1: x > 0; Selection 2: all real numbers

Question 5

What is the range of the function?

Revolt · Accepted Answer

all real numbers

Question 6

What is the inverse of the logarithmic function f(x) = log9x?

Revolt · Accepted Answer

f –1(x) = –log9x; f –1(x) = 9x

Question 7

How can you use a point on the graph of f –1(x) = 9x to determine a point on the graph of f(x) = log9x?✔ Switch the x- and y-coordinates.Use the opposites of the x- and y-coordinates.Use the reciprocals of the x- and y-coordinates.

Revolt · Accepted Answer

Switch the x- and y-coordinates.

Question 8

Which points lie on the graph of f(x) = log9x? Check all that apply.

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/EVresources/3111-10-03-20-04-task/mr002-2.jpg; (9, 1); (81, 2)

Question 9

The sound intensity of rustling leaves is 100 times the reference intensity. Use your graph to determine the sound intensity of rustling leaves in decibels. decibels

Revolt · Accepted Answer

20

Question 10

times the reference intensity.

Revolt · Accepted Answer

1000

Graphing Logarithmic Functions Answers

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