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The horizontal line of the coordinate system is the:
Ax-axis
By-axis
Cz-axis
Dn-axis
Answer & Solution
Correct answer: A. x-axis
1. Two lines at right angles set up the coordinate system.
2. One of them runs across the page.
3. That horizontal line is called the x-axis.
4. So the answer is the x-axis.
_Source: NCERT Class 9 Mathematics, Ch 1 'Orienting Yourself: The Use of Coordinates'_
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