Dilations
Transformations
Translations
Reflections
Challenge
100
What does a dilation do?
What is enlarge or reduce a figure
100
Define
TRANSFORMATION
A transformation is a change in position, shape, or size of a figure.
100
A translation has the rule:
(x,y) --> (x + 4, y - 7)
Describe the rule in a sentence...
(HINT** how many unit are you moving and in what direction?)
4 units to the right and 7 units down.
100
This coordinate changes when a figure is reflected over the x-axis.
the y-coordinate
100
This graph depicts a rigid transformation. What transformation and what is the rule? 
What is a translation.
1 unit right, 2 units down, (x,y) --> (x + 1, y - 2)
200
What does k stand for in dilations?
What is scale factor
200
Define
TRANSLATION
A translation "slides" an object a fixed distance in a given direction.
200
Adding to the x-coordinate moves a figure in this direction.
What is to the right
200
Reflect the point (2,1) across the y-axis. What are the coordinates?
(-2,1)
200
This graph depicts a rigid transformation. What transformation and what is the rule?
What is a reflection.
this figure is relflected over the y-axis.
300
On a coordinate plane, vertex A for triangle ABC is located at (6,4). Triangle ABC is dilated by a scale factor of 0.5 with the center of dilation at the origin. The resulting image is triangle A'B'C'. What are the coordinates of vertex A' ?
What is (3,2)
300
Define
REFLECTION
A reflection is a "flip" of an object over a line.
300
Translate the point (3,2) up 4 units and left 8 units. What are the new coordinates?
(-5, 6)
300
This figure has been reflected over this line.
what is the x-axis?
300
The graph shows multiple transformations of the original shape *. This image shows a reflection of * across the y-axis.
What is D
400
Point B (6,10) was dilated by a scale factor and became B' (12,20). What was the scale factor?
What is k=2
400
Define
ROTATION
A circular movement. Rotation has a central point that stays fixed and everything else moves around that point in a circle.
400
What is the algebraic representation (how would you write the rule) of a translation that moves a figure 2 units left and 3 units up?
(x,y) --> (x - 2, y + 3)
400
What rule is being used in the given transformation?
Reflection across the y-axis (x,y) --> (-x,y)
400
This graph depicts a rigid transformation. What transformation and what is the rule? 
90-degree clockwise rotation
500
Point C (-2,1) was dilated by a scale factor of k=4. What is the new point?
What is (-8,4)
500
Define
DILATION
A transformation in which all dimensions of a figure are multiplied by the same scale factor. Enlarges or reduces a figure using a scale factor. *A NON-RIGID TRANSFORMATION
500
How much did this shape translate?
what is left 2 units, up two units.
(x,y) --> (x - 2, y + 2)
500
This is the coordinate A' after the figure below has been reflected over the given line.
what is (6,1)
500
The graph shows multiple transformations of the original shape *. This image shows a rotation of * 90 degrees counterclockwise about the origin.
figure B