Question
The image of the point $(7, 8)$ when reflected along the x-axis is:
This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
$(7, -8)$
Reflection Rule for X-axis
Reflecting a point $(x, y)$ along the x-axis means keeping the x-coordinate the same and changing the sign of the y-coordinate. The resulting point is $(x, -y)$.
Applying Reflection to Point (7, 8)
The given point is $(7, 8)$.
Applying the x-axis reflection rule:
- The x-coordinate remains $7$.
- The y-coordinate changes from $8$ to $-8$.
Therefore, the reflected point is $(7, -8)$.
Identifying the Correct Option
The calculated reflected point is $(7, -8)$. This matches Option 4.
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