The number of points represented by the equation x=5 on the xy-plane is
- A. Zero
- B. One
- C. Two
- D. Infinitely many ✓
Correct Answer: D. Infinitely many
Explanation
In the 2D Cartesian plane (xy-plane), the equation x=5 represents a straight line parallel to the y-axis. Since a line is composed of an infinite number of points, it represents infinitely many points.
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