Unit Test — Unit test Answers

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1
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Which transformations could have taken place? Select two options.

A
R0, 90°
B
R0, 180°
C
R0, 270°
D
R0, –90°
E
R0, –180°
2
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Which transformations could have taken place? Select two options. Consider both clockwise and counterclockwise rotations when answering this question.

A
R0, 90°
B
R0, 180°
C
R0, 270°
D
R0, –90°
E
R0, –270°
3

A point has the coordinates (0, k).Which reflection of the point will produce an image at the same coordinates, (0, k)?

a
a reflection of the point across the x-axis
a
a reflection of the point across the y-axis
a
a reflection of the point across the line y = x
a
a reflection of the point across the line y = –x
5

The rule as a mapping for the translation of a rectangle is (x, y) → (x – 2, y + 7). Which describes this translation?

A
a translation of 2 units down and 7 units to the right
B
a translation of 2 units down and 7 units to the left
C
a translation of 2 units to the right and 7 units up
D
a translation of 2 units to the left and 7 units up
6

Triangle RST was transformed using the rule (x, y) → (–x, –y). The vertices of the triangles are shown.R (1, 1)S (3, 1)T (1, 6) R' (–1, –1)S' (–3, –1)T' (–1, –6)

A
The transformation was a 90° rotation about the origin.
B
The transformation was a 180° rotation about the origin.
C
The transformation was a 270° rotation about the origin.
D
The transformation was a 360° rotation about the origin.

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