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If ΔABC is reflected over the x-axis and vertex B has coordinates (2, 7), what are the coordinates of vertex Bʹ?

If ΔABC is reflected over the x-axis and vertex B has coordinates (2, 7), what are the coordinates of vertex Bʹ?
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4 votes
If ΔABC is reflected over the x-axis and vertex B has coordinates (2, 7), what are the coordinates of vertex Bʹ?

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User Joseph Kasule
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8.6k points

1 Answer

2 votes
A reflection over the x-axis only change the signal of the coordinate y of the point. Hence, the coordinates of vertex B' are:
B'(2,-7).
answered
User Killstreet
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7.9k points
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