Triangle ABC is reflected across the x-axis. If the coordinates of the original shape are A (-4, -1), B (-5, -2), and C (-10, -1), what are the coordinates of A', B', and C'?
1. A' (-4, 1), B' (5, -2), and C' (-10, 1)
2. A' (-4, 1), B' (-5, 2), and C' (-10, 1)
3. A' (4, -1), B' (5, -2), and C'(10, -1)
4. A' (4, 1), B' (5, 2), and C' (10, 1)
The x-coordinate of a point reflects across the x-axis, so it remains the same. However, the y-coordinate changes signs. Therefore, the coordinates of A' would be (−4, 1), B' would be (−5, 2), and C' would be (−10, 1).
So, the answer is option 2. A' (-4, 1), B' (-5, 2), and C' (-10, 1).