Question

On a coordinate plane, triangle F D E has points (negative 3, 3), (negative 1, negative 1), (negative 3, negative 1). Triangle C B A has points (3, 3), (3, negative 1), (1, negative 1).
What happens to a point when it is reflected over the y-axis?
The coordinates stay the same.
The x-coordinate changes.
The y-coordinate changes.
Both coordinates change.

Answer 1

When a point is reflected over the y-axis, the y-coordinate remains the same, while the x-coordinate changes sign. Therefore, if a point has coordinates \((x, y)\), after reflecting it over the y-axis, its new coordinates will be \((-x, y)\).

So, the correct answer is: **The x-coordinate changes.**