What single transformation maps ∆ ABC onto ∆ A ' B ' C '? A. rotation 90° clockwise about the origin B. rotation 90° counterclockwise about the origin C. reflection across the x -axis D. reflection across the line y = x

Lesson 9-3 for items 8-10, a square is drawn in the coordinate plane, with vertices as shown in the diagram. then the square is reflected across the x-axis. -2 4 8. the function that describes the reflection is (x, y) - a. (x, y-3). b. (x, y-6). c. (-x, y). d. (x,- y).