alleryThe number line studied in earlier grades is:
AFour-dimensional
BNon-dimensional
COne-dimensional
DTwo-dimensional
Answer & Solution
Correct answer: C. One-dimensional
1. A number line needs only one number to fix a position.
2. The coordinate plane needs two.
3. The number line is one-dimensional.
4. So the answer is one-dimensional.
_Source: syllabus Mathematics, Ch 1 'Orienting Yourself: The Use of Coordinates'_
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