Points A and B have co-ordinates (3, 4) and (0, 2) respectively. Find the image :
A" of A under reflection in the y-axis.

Answer

To find the image of point A under reflection in the y-axis, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Coordinates of Point A**:
The coordinates of point A are given as (3, 4).

2. **Understand Reflection in the Y-Axis**:
When a point is reflected in the y-axis, the y-coordinate remains the same, while the x-coordinate changes its sign. This means that if the original point is (x, y), the reflected point will be (-x, y).

3. **Apply the Reflection Rule**:
For point A with coordinates (3, 4):
- The x-coordinate is 3. When reflected in the y-axis, it becomes -3.
- The y-coordinate remains the same, which is 4.

4. **Write the Coordinates of the Reflected Point**:
Therefore, the coordinates of the image A" (A double dash) under reflection in the y-axis will be (-3, 4).

5. **Final Answer**:
The image A" of point A under reflection in the y-axis is (-3, 4).

### Summary:
The image A" of point A (3, 4) under reflection in the y-axis is (-3, 4).

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