To find the vertices of square A'B'C'D' after reflecting square ABCD first across the x-axis and then across the y-axis, we will follow these steps.
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Reflect across the x-axis: This changes the y-coordinates of the vertices. The points A(3, -4), B(7, -4), C(7, -8), and D(3, -8) will become:
- A'(3, 4)
- B'(7, 4)
- C'(7, 8)
- D'(3, 8)
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Reflect across the y-axis: This changes the x-coordinates of the vertices. The reflected points A'(3, 4), B'(7, 4), C'(7, 8), and D'(3, 8) will become:
- A''(-3, 4)
- B''(-7, 4)
- C''(-7, 8)
- D''(-3, 8)
Thus, the vertices of square A'B'C'D' are:
- A'(-3, 4)
- B'(-7, 4)
- C'(-7, 8)
- D'(-3, 8)
So, the correct response is:
Square A′B′C′D′ has vertices A′(−3,4), B′(−7,4), C′(−7,8), and D′(−3,8).