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Let's solve the reflection problem step by step:

1. **Identify the coordinates of \( E \)**:
   - Point \( E \) is marked at (2, 4) on the graph. 
     So, the coordinates of \( E \) are \( (2, 4) \).

2. **Reflect \( E \) over the \( y \)-axis**:
   - When reflecting a point over the \( y \)-axis, the \( x \)-coordinate changes sign, while the \( y \)-coordinate remains the same.
   - The reflection of point \( E(2, 4) \) over the \( y \)-axis will be \( E'(-2, 4) \).

3. **Fill in the blanks**:
   - Coordinates of \( E \): \( (2, 4) \)
   - Coordinates of \( E' \): \( (-2, 4) \)
   - When a point is reflected over the \( y \)-axis, the **\( x \)-coordinate** changes sign.

Do you want more details, or do you have any questions? Here are some related questions to explore:

1. How do you reflect a point over the \( x \)-axis?
2. How would you reflect a point over both the \( x \)- and \( y \)-axes?
3. What would happen if you reflect a point over the origin?
4. How do reflections relate to symmetry in geometry?
5. What are the general rules for reflecting a point over any line?

**Tip**: When reflecting over the \( y \)-axis, only the sign of the \( x \)-coordinate changes, while the \( y \)-coordinate remains the same.

The point E is plotted on the coordinate grid below. Plot the point E', the reflection of E over the y-axis.

Learn how to reflect a point over the y-axis in coordinate geometry. This problem shows how to transform point E(2, 4) to E'(-2, 4) through reflection over the y-axis, while maintaining the y-coordinate. Suitable for students in Grades 6-8.

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