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End Behavior of Logarithmic Functions

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

What is the asymptote of y = log2x - 3

a)

y = 0

b)

y = -3

c)

x = 0

d)

x = -3

2.

What is the asymptote of y = log2(x - 3) ?

a)

y = 0

b)

y = 3

c)

x = 0

d)

x = 3

3.

Describe the end behavior of the graph of f(x)=log⁡4xf\left(x\right)=\log_4x

a)

As  x→∞x\rightarrow\infty  ,  y→∞y\rightarrow\infty  

b)

As  x→∞x\rightarrow\infty  ,  y→−∞y\rightarrow-\infty  

c)

As  x→0+x\rightarrow0^+  ,  y→∞y\rightarrow\infty  

d)

As  x→0+x\rightarrow0^+  ,  y→−∞y\rightarrow-\infty  

4.

What is the vertical asymptote for the graph of f(x)=log⁡4xf\left(x\right)=\log_4x ?

a)

y=0y=0  

b)

y=4y=4  

c)

x=0x=0  

d)

x=4x=4  

5.

Describe the end behavior for h\left(x\right)=-\log_3\left(x+1\right). Select ALL that apply.

a)

As  x→−1−x\rightarrow-1^-  ,  y→−∞y\rightarrow-\infty  

b)

As  x→∞x\rightarrow\infty  ,  y→∞y\rightarrow\infty  

c)

As  x→−1+x\rightarrow-1^+  ,  y→∞y\rightarrow\infty  

d)

As  x→∞x\rightarrow\infty  ,  y→−∞y\rightarrow-\infty  

6.

Describe the end behavior of the function shown: y=log2(x+1)

a)
b)
c)
7.

The logarithmic function f is defined by f(x) = 2lnx. Which of the following pairs of statements correctly describes the end behavior of f?

a)

and

b)

and

c)

and

d)

and

8.

Describe the end behavior for h\left(x\right)=-\log_3\left(x+1\right). Select ALL that apply.

a)

As  x→−1−x\rightarrow-1^-  ,  y→−∞y\rightarrow-\infty  

b)

As  x→∞x\rightarrow\infty  ,  y→∞y\rightarrow\infty  

c)

As  x→−1+x\rightarrow-1^+  ,  y→∞y\rightarrow\infty  

d)

As  x→∞x\rightarrow\infty  ,  y→−∞y\rightarrow-\infty  

9.

Which function best describes the following graph?

a)

y = Log2 X

b)

2x = y

c)

y = 1/(2x)

d)

(1/2)x = y

10.

What is the range of the function graphed?

a)

(-∞, ∞)

b)

(-∞, 2] and [2, ∞)

c)

[2, ∞)

d)

(-∞, 2]