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33 Translations and Reflections.notebook 1 September 10, 2012 Which of the following could be the equation of the function graphed in the xy-plane on the left? Explain the reasons for your choice. A. y = (–x) 2 + 1 B. y = –x 2 + 1 C. y = |x 2 + 1| D. y = |x 2 – 1| E. y = |(x – 1) 2 | SAT

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Page 1: 3-3 Translations and Reflections.notebook - Herrera's Mathherrerasmath.weebly.com/uploads/1/6/7/9/16794556/3-3... · 2020. 2. 27. · 33 Translations and Reflections.notebook 7 September

3­3 Translations and Reflections.notebook

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September 10, 2012

Which of the following could be the equation of the function graphed in the xy-plane on the left?

Explain the reasons for your choice.

A. y = (–x)2 + 1 B. y = –x2 + 1 C. y = |x2 + 1| D. y = |x2 – 1| E. y = |(x – 1)2|

SAT

Page 2: 3-3 Translations and Reflections.notebook - Herrera's Mathherrerasmath.weebly.com/uploads/1/6/7/9/16794556/3-3... · 2020. 2. 27. · 33 Translations and Reflections.notebook 7 September

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September 10, 2012

Review of Basic Functions...

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Page 5: 3-3 Translations and Reflections.notebook - Herrera's Mathherrerasmath.weebly.com/uploads/1/6/7/9/16794556/3-3... · 2020. 2. 27. · 33 Translations and Reflections.notebook 7 September

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Page 6: 3-3 Translations and Reflections.notebook - Herrera's Mathherrerasmath.weebly.com/uploads/1/6/7/9/16794556/3-3... · 2020. 2. 27. · 33 Translations and Reflections.notebook 7 September

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Graph:

y = x2

y = (x ­ 3)2

y = 1 ­ x2

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TranslationsA translation is a rigid transformation that shifts a function's graph up, down, left, right, or any combination. It does not change its size, shape, or orientation. A horizontal translation  moves a graph left or right. It is accomplished by adding or subtracting a constant to the domain values before plugging them into the function. y = f(x ­ c) will translate a graph to the right c unitsy = f(x + c) will translate a graph to the left c units. Example:The parent graph has been translated 3 units to the right. 

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A vertical translation  moves a graph up or down. It is accomplished by additing or subtracting a constant to the range values after they have been plugged into a function.y = f(x) + c will translate up by c unitsy = f(x) ­ c will translate down by c units. Example:The parent graph has been translated up 2 units.

http://mrwyatt.com/GSP/GSP_Precalc_translations.htm

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Basic Ideas of Transformations of Functions

Exploration:  Vertical Translations

Exploration:  Horizontal Translations

Exploration:  Reflection over x­axis

Exploration:  Reflection over y­axis

Interactive Quiz:  Writing Transformations

Interactive Quiz: Identifying Transformations

http://archives.math.utk.edu/visual.calculus/0/shifting.4/index.html

http://enlvm.usu.edu/ma/nav/activity.jsp?sid=__shared&cid=emready@trfns&lid=133&aid=3

http://enlvm.usu.edu/ma/nav/activity.jsp?sid=__shared&cid=emready@trfns&lid=133&aid=6

http://enlvm.usu.edu/ma/nav/activity.jsp?sid=__shared&cid=emready@trfns&lid=135&aid=3

http://enlvm.usu.edu/ma/nav/activity.jsp?sid=__shared&cid=emready@trfns&lid=135&aid=6

http://archives.math.utk.edu/visual.calculus/0/shifting.7/index.html

http://archives.math.utk.edu/visual.calculus/0/shifting.7/index.html

3­3 Transformationsof Functions(Rigid)

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Homework:pages 199­201(5­19 odd, 37, 63, 65, 69­75 odd)

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September 10, 2012