Question

The vertices of triangle DEF are located at (3, 2), (6, 1), and (7, 5).

Which coordinates are the vertices of triangle D'E'F' after DEF has been reflected across the x-axis?
A. (-3, 2), (-6, 1), (-7, 5) B. (3, -2), (6, -1), (7, -5) C. (2, 3), (1, 6), (5, 7) D. (2, -3), (1, -6), (5, -7)

Answer 1

When a point is reflected across the x-axis, the x-coordinate remains the same while the y-coordinate changes sign. So, the correct answer is B. (3, -2), (6, -1), (7, -5).

Explanation: