unit 5 transformations in the coordinate plane...unit 5 transformations in the coordinate plane ....
TRANSCRIPT
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Unit 5
Transformations
in the
Coordinate Plane
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Translations
x,y x 5,y 5
x,y x 5,y 5
right 5, down 5
left 5, up 5
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Reflections
x,y x, y
x,y x,y
over x axis
over y axis
x,y y,x
over y x
x,y y, x
over y x
over y # or x # count
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Rotations
x,y y, x 90 CW 270 CCW
x,y y,x 90 CCW270 CW
x,y x, y 180 CW 180 CCW
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Question 1
The top shape (pre image) has been translated to the bottom
shape (image). Which rule represents the translation?
a) c)
b) d)
1 1x ,y x,y 6 1 1x ,y x 6,y
1 1x ,y x 4,y 4 1 1x ,y x 6,y 6
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Question 2 If the result of
(x, y)→(x – 4, y + 3) is A’(-2, 8),
what is the pre-image, or A?
A 2,5
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Question 3 If A(4, -9) is translated using
the rule, (x, y)→(x+5, y-7)
what is the image, or A’?
A' 9, 16
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Question 4
Which best describes the transformation that occurs in the
graph?
a) c)
b) d)
dilation rotation
reflection translation
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Question 5 A triangle in the coordinate place has coordinates of (2, 3), (-4, -5), and (-2, 4). It is reflected about the x-axis.
What are the new coordinates?
2, 3 , 4,5 , and 2, 4
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Question 6
The figure on the left has been transformed to the figure on
the right. Which transformation does this show?
a) c)
b) d)
1 1x ,y y,x 1 1x ,y x,y
1 1x ,y x, y 1 1x ,y x, y
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Question 7 Reflect the figure across x=1.
What is the image of T?
T ' 6,4
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Question 8
The figure is transformed as shown in the diagram.
Describe the transformation
a) c)
b) d)
dilation, then reflection
rotation, then reflection
reflection, then rotation
translation, then reflection
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Question 9 Rotate the point K(5,-6) 270° Clockwise about the origin.
what is the image, or K’?
K' 6,5
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Question 10 If C(9,4) is reflected over the
y-axis, then reflected over the
line y=-x.
What is the final image, or C”?
C" 4,9
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Question 11 If B(2,6) is translated using the
rule (x, y)→(x +7, y -4), and then rotated 180 ° about the origin.
What is the final image, or B”?
B" 9, 2
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Question 12
A reflection of triangle abc to triangle a’b’c’ is shown.
Which rule represents this reflection?
a) c)
b) d)
x,y y,x
x,y x, y
x,y x,y
x,y x, y
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Question 13
Which transformation will be equivalent to rotating a figure 180 ° counterclockwise?
a) c)
b) d)
reflecting over y x
reflecting over y x
reflecting over x axis
and the y axis
translating left 3 units
and down 5 units
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Question 14
Describe the transformation
a) c)
b) d)
reflection across x axis
reflection across y axis
reflection across y x
reflection across y x
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Answers to MC Practice
Front
1. B
2. C
3. D
4. C
5. C
Back
6. A
7. D
8. B
9. B