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2.6 Shifts and Reflections of Ab Val.notebook
1
August 29, 2018
1) Graph 2x 5y = 10
2) Graph y = 3x
3) Given f(x) = 3x2 +2x, evaluate the following:
f(2)
f(1)
4) Find the slope and yintercept of:x = 4
WARM UP
Graph
2.6 Shifts and Reflections of Ab Val.notebook
2
August 29, 2018
2.6: Vertical and Horizontal Stretches
Objectives:• To graph an absolute value function by performing transformations on the parent• To apply transformations to graphing any function
2.6 Shifts and Reflections of Ab Val.notebook
3
August 29, 2018
Observation
How to perform transformations on the absolute value function.
Talk with the person next to you about how these graphs will transform.
y = |x|y = |x| + 2y = |x| 5
look at y
our
notes fro
m
yesterda
y
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
Observation
What about these??
y = |x|
y = |x + 2|
y = |x 5|
look at y
our
notes fro
m
yesterda
y
2.6 Shifts and Reflections of Ab Val.notebook
5
August 29, 2018
Observation
y = |x|
y = 2|x|
y = 5|x|
Talk with the person next to you about how these graphs will transform.
look at y
our
notes fro
m
yesterda
y
10 8 6 4 2 0 2 4 6 8 10
1098765432
12345678910
x
y
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
For |a| > 1• graph is a vertical stretch• Example: y = 2|x|
Graph
X Y X Y
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
For |a|
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
Describe and sketch the graph of y = 3 |x 1| 2.
Remember, always do stretches first!X YX Y
X YX Y
X YX Y
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
Transformations
How would you graph y = |2x| ?
Horizontal shrink y = |ax| Transformation, |a| > 1
X YX Y
X YX Y
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
Transformations
How would you graph ?
Horizontal stretch y = |ax| Transformation, |a|
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
Transformations
Horizontal stretch y = |ax| Transformation, |a|
2.6 Shifts and Reflections of Ab Val.notebook
12
August 29, 2018
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
Assignment due Friday
p. 90 #40, 42
p. 97 #113 odd, 1720, 2931, 4245
2.6 Shifts and Reflections of Ab Val.notebook
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August 29, 2018
Page 1: Sep 13-11:29 AMPage 2: Jul 23-2:51 PMPage 3: Jul 23-2:51 PMPage 4: Jul 23-2:51 PMPage 5: Jul 23-2:51 PMPage 6: Sep 13-11:31 AMPage 7: Sep 13-11:31 AMPage 8: Jul 23-2:51 PMPage 9: Jul 23-2:51 PMPage 10: Jul 23-2:51 PMPage 11: Jul 23-2:51 PMPage 12: Aug 29-12:07 PMPage 13: Jul 23-2:51 PMPage 14: Aug 29-10:39 AM