monday 9.26 -...

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1 MONDAY 9.26.11 * HW Questions (FRIDAY'S material will not be retaught)... you can review the lesson: * Online on my website * View online examples * Come in to Algebra 2 Study Group (Tuesday after school or Friday Morning.) * Finish up Chapter 2: Section 2.9 Transformations of the Absolute Value Function **Quiz TOMORROW on everything to date ("mock test") **Wednesday & Thursday will involve corrections and review for the Chapter test on FRIDAY :)

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Page 1: MONDAY 9.26 - koshutasmathconnection.weebly.comkoshutasmathconnection.weebly.com/uploads/8/3/6/6/... · MONDAY 9.26.11 * HW Questions (FRIDAY'S material will not be retaught)... you

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MONDAY 9.26.11

* HW Questions (FRIDAY'S material will not be re­taught)... you can review the lesson:

* Online on my website* View online examples* Come in to Algebra 2 Study Group    (Tuesday after school or Friday Morning.)

* Finish up Chapter 2: Section 2.9 ­ Transformations of the AbsoluteValue Function

**Quiz TOMORROW on everything to date ("mock test")

**Wednesday & Thursday will involve corrections and review for the Chapter test on FRIDAY :)

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Absolute Value Graph

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4 units down

 

Check It Out! Example 1a

Let g(x) be the indicated transformation of f(x) = |x|. Write the rule for g(x) and graph the function.

3 units UP

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REMEMBER!!!

VERTICAL SHIFTS ­ 

g(x) = f(x) + k

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Perform the transformation on f(x) = |x|. Then graph the transformed function g(x). 

2 units right

4 units LEFT

 

Check It Out! Example 1b

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REMEMBER!!!

HORIZONTAL SHIFTS ­ 

g(x) = f(x ­ h) 

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Check It Out! Example 2

Translate  f(x) = |x| so that the vertex is at (4, –2). Then graph. 

 

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Ex. Graph g(x) = ­ IxI

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Reflection across x­axis: g(x) = –f(x)Reflection across y­axis: g(x) = f(–x)

Remember!

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Perform the transformation. Then Reflect the graph. f(x) = –|x – 4| + 3 across the y­axis.

Check It Out! Example 3a

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VERTICAL STRETCH/COMPRESSION:

g(x) = a f(x)

HORIZONTAL STRETCH/COMPRESSION:

g(x) = f(1/b x)

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Compress the graph of f(x) = |x| + 1 vertically  by a factor of    .

Check It Out! Example 3b

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Stretch the graph. f(x) = |4x| – 3 horizontally  by a factor of 2.

Check It Out! Example 3c

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SUMMARY:

g (x) = a  I(x ­ h)I + k

PARENT FUNCTION:

f(x) =  x

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Homework:pg. 161 ­162 (9­23 odd, 27, 29)