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If a point lies on the y-axis, its x-coordinate is
Apositive only
B1
C0
Dnegative only
Answer & Solution
Correct answer: C. 0
1. The y-axis is the vertical reference line.
2. Points on it have no horizontal offset from the origin.
3. So their x-coordinate is 0.
4. Hence option A is correct.
_Source: Selina Concise Mathematics Class 9, Ch 26 Co-ordinate Geometry (Mistral OCR'd PDF), section on axes_
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