practice a idea77
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Name Date Class
LESSON
7-7Practice ATransforming Exponential and Logarithmic Functions
Graph each function. Find the asymptote. Tell how the graph is transformed from the graph of f x 4 x .
1. f x 4 x 1
a. Complete the table.
x 3 2 1 0 1
f x 4 x 1 4 2 1 ___ 16
0.25 1 4 16
b. Graph the ordered pairs and draw a curve through the points.
c. Describe the asymptote. y 0
d. How is the graph transformed from the graph of f x 4 x ?
Translated 1 unit left
2. f x 4 x
y 0; reflected across the x-axis
Write each transformed function.
4. The function f x ln x is reflected across the y-axis. g x ln x
5. The function f x 8 x is horizontally compressed by a factor of 2. g x 8
2x
6. The function f x 3 x is vertically stretched by a factor of 4. g x 4 3 x
Copyright by Holt, Rinehart and Winston. Holt Algebra 2All rights reserved.
A2_IDEA_PA0707 1A2_IDEA_PA0707 1 4/9/06 4:05:58 PM4/9/06 4:05:58 PMProcess BlackProcess Black
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Name Date Class
LESSON
7-7Practice ATransforming Exponential and Logarithmic Functions
Graph each function. Find the asymptote. Tell how the graph is transformed from the graph of f x 4 x .
1. f x 4 x 1
a. Complete the table.
x 3 2 1 0 1
f x 4 x 1 4 2 1 ___ 16
0.25 1 4 16
b. Graph the ordered pairs and draw a curve through the points.
c. Describe the asymptote. y 0
d. How is the graph transformed from the graph of f x 4 x ?
Translated 1 unit left
2. f x 4 x
y 0; reflected across the x-axis
Write each transformed function.
4. The function f x ln x is reflected across the y-axis. g x ln x
5. The function f x 8 x is horizontally compressed by a factor of 2. g x 8
2x
6. The function f x 3 x is vertically stretched by a factor of 4. g x 4 3 x
Copyright by Holt, Rinehart and Winston. Holt Algebra 2All rights reserved.
A2_IDEA_PA0707 1A2_IDEA_PA0707 1 4/9/06 4:05:45 PM4/9/06 4:05:45 PM