Transformation of Figures

Which algebraic representation is correct

• (x+2,y+2)

• (1/2x,1/2y)

• (-x,y)

• (2x,2y)

What is a reflection?

• When you turn an object around a point.

• When you slide an object form one place to another.

• When you flip or mirror an object across a line.

• When you resize an object.

Write a rule for the translation.

•  (x -1, y  + 2)

•  (x -2, y  + 1)

•  (x +2, y  - 1)

• (x +1, y  -  2)

How is trapezoid ABCD translated to trapezoid A'B'C'D'?

• Translated 5 units down and 5 units to the right

• Translated 5 units down and 1 to the right

• Translated 8 units down and 5 units to the right

• Translated 5 units down and 4 units to the right

Which answer shows a reflection across the x-axis?

• d

• c

• b

• a

How is triangle ABC being translated to triangle A'B'C'?

• up 3, left 8

• up 9, left 4

• down 3, right 8

• down 9, right 4

If you were to rotate ABCD 90° clockwise about the origin, what would be the coordinate of A'?

• (-5, 3)

• (3, -5)

• (5, -3)

• (-3, -5)

Rotate the coordinates 90° CCW.
A (4, 1)
B (6, -2)
C (8, -4)

• A' (1, 4)
  B'(-2, -6)
  C' (-4, -8)

• A' (3, 4)
  B' (1, 6)
  C' (8, 2)

• A' (-1,4)
  B' (2,6)
  C'(4,8)

• A' (-1, -4)
  B'(-2, -6)
  C' (4, -8)

Translate the points 3 units right and 6 units down. 
S (4, -6)
T (-6, 10)
U (-4, -8)

• S' (-7, -12)
  T' (-3, -4)
  U' (5, 10)

• S' (7, -12)
  T' (3, 4)
  U' (1, 14)

• S' (7, 12)
  T' (3, 4)
  U' (1, 14)

• S' (7, -12)
  T' (-3, 4)
  U' (-1, -14)

The figures are similar. Find x. 

• 18.5

• 30.5

• 20.5

• 16.5