Name the Transformation
A turn is also a word for a...
What is a Rotation?
The pre-image and the new image have the same shape, size, and .
orientation (direction)
Reflections over the x-axis changes the __-_______.
y-axis.
A rotation turns a figure in either a __________ or a _________________ direction.
clockwise or a counter clockwise.
It describes how much the figure is enlarged or reduced.
scale factor
A flip is another word for a...
What is a Reflection?
Reflection across the x-axis and across the y-axis
(x,y) --> (x,-y)
These two things make a translation congruent.
same size and same shape
Reflections across the y-axis makes the __-_____opposite.
x-axis
How many degrees is one turn?
90 degrees
The dilated image is larger than the pre-image. Is it possible for the scale factor to have been a fraction?
It is not possible because it was enlarged; the scale factor has to be larger than 1.
Slide is another word for a...
What is a Translation?
90 degree rotation counterclockwise
(x,y) --> (-y,x)
When you translate, (x-6,y) will move...
6 units left
Reflect the point (-2,4) over the y-axis.
(2,4)
How many degrees are two turns?
180 degrees.
Dilate the figure by a scale factor of 3 with the origin of the center of dilation. What are the coordinates of the image?
M(-3,3), N(9,-6), O(6,3)
M(-9,9), N(27,-18), O(18,9)
I am not a congruent transformation.
What is a dilation?
400 B O N U S POINTS!!!
Use this algebraic representation, (x,y) -->(x+4,y-2) to provide a verbal expression of the slide.
4 spaces/units right, 2 spaces/units down.
Point (-8,3) is reflected over the x-axis. Where is the new point located?
(-8,-3)
What is the algebraic representation for a 180 degree rotation?
(x,y) --> (-x,-y)
If the scale factor is provided, then you _________ by the original coordinate(s). If the scale factor is NOT provided, then you __________ the new coordinate by the original.
multiply; divide.
The word dilate means to or a figure.
What is enlarge or reduce?
Dilation - reduced
Dilation - enlarged
Choose from the following: -0.5, 3, 1/3, -7
(x,y) --> (1/3x,1/3y)
(x,y) --> (3x,3y)
When you translate a figure, you _______________a number to x and y.
add or subtract
Determine the line of reflection by using the following coordinates:
N (-5,1) --> N'(-5,-1)
reflection across the x-axis
Which answer represents a 90 degree rotation clockwise?
F. (x,y)-->(x+4, y-5)
G. (x,y)-->(y,-x)
H. S(-5,3)-->S'(-3,-5)
J. S(-3,5)-->S'(5,3)
K. Both G and J.
K. Both G and J.
The point (8,12) was dilated to become point (2,3). What was the scale factor?
1/4