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The given diagram shows a triangle with a point \( R \) being reflected across the x-axis to get point \( R' \). Let's determine the coordinates of point \( R' \).

### Step-by-Step Solution:
1. **Original Coordinates of \( R \):**
   From the graph, the point \( R \) appears to be at coordinates \( (-3, 3) \).
   
2. **Reflection Across the x-Axis:**
   - When a point \( (x, y) \) is reflected across the x-axis, its new coordinates become \( (x, -y) \).
   - Applying this rule to \( R(-3, 3) \), the reflected point \( R' \) will be \( (-3, -3) \).

### Conclusion:
The coordinates of \( R' \) after reflection across the x-axis will be \( (-3, -3) \).

The correct answer is:
- \( \boxed{(-3, -3)} \)

Would you like more details on reflections or have any questions?

Here are 5 related questions to expand your understanding:
1. What happens when you reflect a point across the y-axis instead of the x-axis?
2. How would you reflect a point across both axes (x and y)?
3. How do reflections affect shapes like triangles or quadrilaterals?
4. What are the coordinates of point C after reflecting it across the x-axis?
5. Can you derive a general formula for reflecting a point across any line, not just the axes?

**Tip:** When reflecting a point across the x-axis, only the y-coordinate changes, becoming its opposite.

What will be the coordinates of R' after reflecting point R across the x-axis?

This lesson explains how to find the coordinates of a point after reflecting it across the x-axis. Learn how the coordinates of point R (-3, 3) change to (-3, -3) using the reflection formula. Suitable for students in Grades 6-8.

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