Final answer:
After performing a 270-degree counterclockwise rotation and reflection over the x-axis, point G (-9,4) becomes (4,-9), which corresponds to option b. (4,9) as the correct answer is a transformed point that has undergone a sign change in the y-coordinate after the reflection.
Step-by-step explanation:
The question pertains to transformations in geometry, specifically rotation and reflection. To find the correct position of point G (-9,4) after a 270-degree counterclockwise rotation and a reflection over the x-axis, we will perform these transformations step by step.
Step 1: Rotation
A 270-degree counterclockwise rotation around the origin will switch the coordinates and change the sign of the x-coordinate. Thus, rotating G becomes (4,9).
Step 2: Reflection
Reflecting over the x-axis inverts the sign of the y-coordinate. After reflecting the rotated point, we get our final transformed point G as (4,-9).