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Shifting Curves I
Shifting Curves I
y  f  x   c or  y  c   f  x 
moves f  x   or  c units
                      
Shifting Curves I
y  f  x   c or  y  c   f  x 
moves f  x   or  c units
                      

y  f  x  c
moves f  x   or  c units
                          
Shifting Curves I
y  f  x   c or  y  c   f  x 
moves f  x   or  c units
                      

y  f  x  c
moves f  x   or  c units
                          


 y   f  x

 reflects f  x  in the x axis (i.e. flips upside down)
Shifting Curves I
y  f  x   c or  y  c   f  x 
moves f  x   or  c units
                      

y  f  x  c
moves f  x   or  c units
                          


 y   f  x

 reflects f  x  in the x axis (i.e. flips upside down)
 y  f x

 reflects f  x  in the y axis
e.g.  i  y   x  3  4
                     2
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y


                                     x
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units

                                     3   x
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units
                                     4
      3. shift up 4 units                x
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units         (3,4)
      3. shift up 4 units                    x
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units         (3,4)
      3. shift up 4 units                    x



     ii  y    x  1  2
                         3
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units         (3,4)
      3. shift up 4 units                    x



     ii  y    x  1  2
                         3



      1. basic curve : y  x3    y


                                             x
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units         (3,4)
      3. shift up 4 units                    x



     ii  y    x  1  2
                         3



      1. basic curve : y  x3    y
      2. reflect in x axis

                                             x
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units             (3,4)
      3. shift up 4 units                        x



     ii  y    x  1  2
                         3



      1. basic curve : y  x3    y
      2. reflect in x axis
      3. shift left 1 unit
                                                 x
                                     1
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2   y
      2. shift right 3 units             (3,4)
      3. shift up 4 units                        x



     ii  y    x  1  2
                         3



      1. basic curve : y  x3        y
      2. reflect in x axis
      3. shift left 1 unit       2
                                                 x
      4. shift up 2 units
e.g.  i  y   x  3  4
                     2



      1. basic curve : y  x 2      y
      2. shift right 3 units              (3,4)
      3. shift up 4 units                         x



     ii  y    x  1  2
                         3



      1. basic curve : y  x3       y
      2. reflect in x axis
      3. shift left 1 unit       (–1,2)
                                                  x
      4. shift up 2 units
 iii  x 2  2 x  y 2  4 y  4  0
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2


                           9
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2
                                          y
                           9
   1. basic curve : x 2  y 2  9
                                              x
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2
                                          y
                           9
   1. basic curve : x 2  y 2  9
                                          1   x
   2. shift left 1 unit
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2
                                          y
                           9
   1. basic curve : x 2  y 2  9         2
                                              x
   2. shift left 1 unit
   3. shift up 2 units
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2
                                            y
                           9
                                          (–1,2)
   1. basic curve : x 2  y 2  9
                                                   x
   2. shift left 1 unit
   3. shift up 2 units
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2
                                            y
                           9
                                          (–1,2)
   1. basic curve : x 2  y 2  9
                                                   x
   2. shift left 1 unit
   3. shift up 2 units


  iii  y  2 x
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2
                                            y
                           9
                                          (–1,2)
   1. basic curve : x 2  y 2  9
                                                   x
   2. shift left 1 unit
   3. shift up 2 units


  iii  y  2 x
                                            y
   1. basic curve : y  2    x


                                             1
                                                   x
 iii  x 2  2 x  y 2  4 y  4  0
        x  1   y  2   4  1  4
               2           2
                                            y
                           9
                                          (–1,2)
   1. basic curve : x 2  y 2  9
                                                   x
   2. shift left 1 unit
   3. shift up 2 units


  iii  y  2 x
                                            y
   1. basic curve : y  2    x


   2. reflect in y axis                      1
                                                   x
Exercise 2I; 1bdefg, 3abdf, 4, 5ace,
    6bdf, 7ac, 9, 10acgnpr, 12

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11 X1 T02 09 shifting curves I (2010)

  • 2. Shifting Curves I y  f  x   c or  y  c   f  x  moves f  x   or  c units  
  • 3. Shifting Curves I y  f  x   c or  y  c   f  x  moves f  x   or  c units   y  f  x  c moves f  x   or  c units  
  • 4. Shifting Curves I y  f  x   c or  y  c   f  x  moves f  x   or  c units   y  f  x  c moves f  x   or  c units   y   f  x reflects f  x  in the x axis (i.e. flips upside down)
  • 5. Shifting Curves I y  f  x   c or  y  c   f  x  moves f  x   or  c units   y  f  x  c moves f  x   or  c units   y   f  x reflects f  x  in the x axis (i.e. flips upside down) y  f x reflects f  x  in the y axis
  • 6. e.g.  i  y   x  3  4 2
  • 7. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y x
  • 8. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units 3 x
  • 9. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units 4 3. shift up 4 units x
  • 10. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units (3,4) 3. shift up 4 units x
  • 11. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units (3,4) 3. shift up 4 units x  ii  y    x  1  2 3
  • 12. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units (3,4) 3. shift up 4 units x  ii  y    x  1  2 3 1. basic curve : y  x3 y x
  • 13. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units (3,4) 3. shift up 4 units x  ii  y    x  1  2 3 1. basic curve : y  x3 y 2. reflect in x axis x
  • 14. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units (3,4) 3. shift up 4 units x  ii  y    x  1  2 3 1. basic curve : y  x3 y 2. reflect in x axis 3. shift left 1 unit x 1
  • 15. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units (3,4) 3. shift up 4 units x  ii  y    x  1  2 3 1. basic curve : y  x3 y 2. reflect in x axis 3. shift left 1 unit 2 x 4. shift up 2 units
  • 16. e.g.  i  y   x  3  4 2 1. basic curve : y  x 2 y 2. shift right 3 units (3,4) 3. shift up 4 units x  ii  y    x  1  2 3 1. basic curve : y  x3 y 2. reflect in x axis 3. shift left 1 unit (–1,2) x 4. shift up 2 units
  • 17.  iii  x 2  2 x  y 2  4 y  4  0
  • 18.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 9
  • 19.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 y 9 1. basic curve : x 2  y 2  9 x
  • 20.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 y 9 1. basic curve : x 2  y 2  9 1 x 2. shift left 1 unit
  • 21.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 y 9 1. basic curve : x 2  y 2  9 2 x 2. shift left 1 unit 3. shift up 2 units
  • 22.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 y 9 (–1,2) 1. basic curve : x 2  y 2  9 x 2. shift left 1 unit 3. shift up 2 units
  • 23.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 y 9 (–1,2) 1. basic curve : x 2  y 2  9 x 2. shift left 1 unit 3. shift up 2 units  iii  y  2 x
  • 24.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 y 9 (–1,2) 1. basic curve : x 2  y 2  9 x 2. shift left 1 unit 3. shift up 2 units  iii  y  2 x y 1. basic curve : y  2 x 1 x
  • 25.  iii  x 2  2 x  y 2  4 y  4  0  x  1   y  2   4  1  4 2 2 y 9 (–1,2) 1. basic curve : x 2  y 2  9 x 2. shift left 1 unit 3. shift up 2 units  iii  y  2 x y 1. basic curve : y  2 x 2. reflect in y axis 1 x
  • 26. Exercise 2I; 1bdefg, 3abdf, 4, 5ace, 6bdf, 7ac, 9, 10acgnpr, 12