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A line is parallel to XY- plane if all t...

A line is parallel to XY- plane if all the points on the line have equal …………..

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To determine the condition for a line to be parallel to the XY-plane, we need to analyze the coordinates of points on the line. ### Step-by-Step Solution: 1. **Understanding the XY-plane**: The XY-plane is defined by the coordinates (x, y, z) where the z-coordinate is always zero. This means that any point on the XY-plane can be represented as (x, y, 0). 2. **Condition for Parallelism**: A line is said to be parallel to the XY-plane if it does not change in the z-direction as it moves along the x and y directions. This means that the z-coordinate remains constant for all points on the line. ...
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