1.True or false: The mapping notation for reflecting point (x, y) about the x-axis is (−x,y).

A. This statement is false. The mapping notation for reflecting point (x,y) about the x-axis is (y,x).
B. This statement is true.
C. This statement is false. The mapping notation for reflecting point (x,y) about the x�-axis is (−x,−y)
D. This statement is false. The mapping notation for reflecting point (x,y) about the x�-axis is (x,−y).
2. What is the mapping notation for translating point (x,y) down 3 units?
A. (x,y−3)
B. (x+3,y)
C. (x,y+3)
D. (x−3,y)
3. What translation vector translates A(−2,7) to A′(5,−1)?
A. (−7,8)
B. (7,−8)
C. (3,6)
D. (3,−6)
4. Which transformation maps B(2,5) to B′(−2,−5)?
A. A 180° rotation
B. A °270° rotation
C. A °90° rotation
D. Reflection about the y-axis
5. Point (a,b) is reflected about the x-axis. The resulting point is then reflected about the y-axis to produce a final point. Which transformation maps the original point directly to the final
A. A °270° rotation
B. A°90° rotation
C. A°180° rotation
D. A translation down b units and to the left a units

3 answers

1. False. The mapping notation for reflecting point (x,y) about the x-axis is (x,-y).
2. (x,y-3)
3. (7,-8)
4. Reflection about the y-axis
5. A 180° rotation
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