comparing, shifting & scaling graphs

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www.projectmathsbooks.com Comparing, Shifting & Scaling Graphs

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Comparing, Shifting & Scaling Graphs. Shifting and Scaling functions. 31. 31. 32. 32. 33. 33. 34. Activity 2. 35. Activity 2. 35. Activity 3. Which is the best format? . Can we change from one format to the other and back again? . 36. Activity 3. - PowerPoint PPT Presentation

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Page 1: Comparing, Shifting  &  Scaling Graphs

www.projectmathsbooks.com

Comparing, Shifting

& ScalingGraphs

Page 2: Comparing, Shifting  &  Scaling Graphs

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Page 3: Comparing, Shifting  &  Scaling Graphs

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Page 4: Comparing, Shifting  &  Scaling Graphs

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Shifting

and

Scaling functions

Page 5: Comparing, Shifting  &  Scaling Graphs

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-3-2-10123

-3-2-10123

-3-2-10123

-3-2-10123

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3 18 (-3,18)-2 8 (-2,8)-1 2 (-1,2)0 0 (0,0)1 2 (1,2)2 8 (2,8)3 18 (3,18)

-3 27 (-3,27)

-2 12 (-2,12)

-1 3 (-1,3)0 0 (0,0)1 3 (1,3)2 12 (2,12)3 27 (3,27)

-3 4.5 (-3,4.5)

-2 2 (-2,2)-1 0.5 (-

1,0.5)0 0 (0,0)1 0.5 (1,0.5

)2 2 (2,2)3 4.5 (3,4.5

)

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3-2-10123

 

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Page 6: Comparing, Shifting  &  Scaling Graphs

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-3-2-10123

-3-2-10123

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3 -9 (-3,-9)-2 -4 (-2,-4)-1 -1 (-1,-1)0 0 (0,0)1 -1 (1,-1)2 -4 (2,-4)3 -9 (3,-9)

-3 -27 (-3,-27)-2 -12 (-2,-12)-1 -3 (-1,-3)0 0 (0,0)1 -3 (1,-3)2 -12 (2,-12)3 -27 (3,-27)

-3 -4-5 (-3,-4.5)

-2 -2 (-2,-2)-1 -0.5 (-1,-

0.5)0 0 (0,0)1 -0.5 (1,-0.5)2 -2 (2,-2)3 -4.5 (3,-4.5)

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3-2-10123

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Page 7: Comparing, Shifting  &  Scaling Graphs

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-3-2-10123

-3-2-10123

 

-3 12 (-3,12)-2 7 (-2,7)-1 4 (-1,4)0 3 (0,3)1 4 (1,4)2 7 (2,7)3 12 (3,12)

-3 5 (-3,5)-2 0 (-2,0)-1 -3 (-1,-3)0 -4 (0,-4)1 -3 (1,-3)2 0 (2,0)3 5 (3,5)

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3 10 (-3,10)

-2 5 (-2,5)-1 2 (-1,2)0 1 (0,1)1 2 (1,2)2 5 (2,5)3 10 (3,10)

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3-2-10123

 

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Page 8: Comparing, Shifting  &  Scaling Graphs

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-3-2-10123

-3-2-10123

 

-3 -6 (-3,-6)-2 -1 (-2,-1)-1 2 (-1,2)0 3 (0,3)1 2 (1,2)2 -1 (2,-1)3 -6 (3,-6)

-3 -13 (-3,-13)

-2 -8 (-2,-8)-1 --5 (-1,-5)0 -4 (0,-4)1 -5 (1,-5)2 -8 (2,-8)3 -13 (3,-13)

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3 -8 (-3,-8)

-2 -3 (-2,-3)

-1 0 (-1,0)0 1 (0,1)1 0 (1,0)2 -3 (2,-3)3 -8 (3,-8)

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-3-2-10123

 

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Page 9: Comparing, Shifting  &  Scaling Graphs

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-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-4-3-2-1012

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-4 9 (-4,9)-3 4 (-3,4)-2 1 (-2,1)-1 0 (-1.0)0 1 (0,1)1 4 (1,4)2 9 (2,9)

-6-5-4-3-2-10

-3-2-10123

-6 0 (-6,9)-5 1 (-5,4)-4 4 (-4,1)-3 9 (-3,0)-2 16 (-2,1)-1 25 (-1,4)0 36 (0,9)

-3 6.25 (-3,6.25)

-2 2.25 (-2,2.25)

-1 0.25 (-1,0.25)

0 0.25 (0,0.25)1 2.25 (1,2.25)2 6.25 (2,6.25)3 12.25 (3,12.2

5)

 

 

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Page 10: Comparing, Shifting  &  Scaling Graphs

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-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-2-101234

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-2 9 (-3,9)-1 4 (-2,4)0 1 (-1,1)1 0 (0,0)2 1 (1,1)3 4 (2,4)4 9 (3,9)

0

23456

-3-2-10123

0 9 (0,9)1 4 (1,4)2 1 (2,1)3 0 (3,0)4 1 (4,1)5 4 (5,4)6 9 (6,9)

-3 12.25 (-3,12.25)

-2 6.25 (-2,6.25)-1 2.25 (-1,2.25)0 0.25 (0,0.25)1 0.25 (1,0.25)2 2.25 (2,2.25)3 6.25 (3,6.25)

 

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Page 11: Comparing, Shifting  &  Scaling Graphs

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-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-4-3-2-1012

-3 9 (-3,9)-2 4 (-2,4)-1 1 (-1,1)0 0 (0,0)1 1 (1,1)2 4 (2,4)3 9 (3,9)

-4 9 (-4,9)-3 4 (-3,4)-2 1 (-2,1)-1 0 (-1,0)0 1 (0,1)1 4 (1,4)2 9 (2,9)

-4-3-2-1012

-4-3-2-1012

-4 11 (-4,11)-3 6 (-3,6)-2 3 (-2,3)-1 2 (-1,2)0 3 (0,3)1 6 (1,6)2 11 (2,11)

-4-3-2-1012

 

 

34

-4 11 (-4,11)-3 6 (-3,6)-2 3 (-2,3)-1 2 (-1,2)0 3 (0,3)1 6 (1,6)2 11 (2,11)

-4 7 (-4,7)-3 2 (-3,2)-2 -1 (-2,-1)-1 -2 (-1,-2)0 -1 (0,-1)1 2 (1,2)2 7 (2,7)

Page 12: Comparing, Shifting  &  Scaling Graphs

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Graph Function Local Maximum/Minimum

123456789

10

Activity 2Graph Function Local 

Maximum/Minimum

1 Local min (0,0)

2 Local min (0,0)

3 Local max(0,0)

4 Local min (0,3)

5 Local min (0,-1)

6 Local max (0,-1)

7 Local max (0,3)

8 Local min (-1,0)

9 Local min (3,0)

10 Local min (-1,2)

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Page 13: Comparing, Shifting  &  Scaling Graphs

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Graph Function Local Maximum/Minimum

1

11

12

13

14

15

16

17

18

19

20

Activity 2Graph Function Local 

Maximum/Minimum

1

11 Local min (0,1)

12 Local min (0,0)

13 Local min (2,0)

14 Local max (0,0)

15 Local max (0,-1)

16 Local min (-3,-2)

17 Local min (2,3)

18

19

20

35

Page 14: Comparing, Shifting  &  Scaling Graphs

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Which is the best format?

Can we change from one format to the other and back again?

Activity 3

36

Page 15: Comparing, Shifting  &  Scaling Graphs

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Activity 3-2-10123456

-2-10123456

-2-10123456

-2 7 (-2,7)

-1 0 (-1,0)

0 -5 (-1,5)

1 -8 (1,-8)

2 -9 (2,9)

3 -8 (3,-8)

4 -5 (4,-5)

5 0 (5,0)

6 7 (6,7)

-2 7 (-2,7)

-1 0 (-1,0)

0 -5 (-1,5)

1 -8 (1,-8)

2 -9 (2,9)

3 -8 (3,-8)

4 -5 (4,-5)

5 0 (5,0)

6 7 (6,7)

-2 7 (-2,7)

-1 0 (-1,0)

0 -5 (-1,5)

1 -8 (1,-8)

2 -9 (2,9)

3 -8 (3,-8)

4 -5 (4,-5)

5 0 (5,0)

6 7 (6,7)

4. What items of information from each of the functions can help us if sketching the graph of a function?

36

Page 16: Comparing, Shifting  &  Scaling Graphs

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Activity 4Graph

Matching

Page 17: Comparing, Shifting  &  Scaling Graphs

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F S CS TP I R G

Local min at  (1,-9)

Local min at (3,0)

Local max at (1,4)

Local min at  (-3,-1)

Local min at  (5,-1)

Local max at (4,4)

Graph Matching Activity 4 Solutions

F S CS TP I R GF5 S5 V3 TP3 Y3 R2 G1

F1 S3 V6 TP6 Y1 R5 G2

F3 S1 V4 TP1 Y5 R1 G3

F2 S2 V5 TP4 Y2 R6 G4

F6 S4 V1 TP2 Y6 R4 G5

F4 S6 V2 TP1 Y4 R3 G6