A line is parallel to xy-plane if all the points on the line have… - Vidyadip

Question

A line is parallel to xy-plane if all the points on the line have equal ________.

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Answer

A line is parallel to xy-plane if all the points on the line have equal z-coordinate.
Solution:
A line is parallel to xy-plane if each point P(x, y, z) on it is at same distance from xy-plane.
Distance of point P from xy plane is ‘z’
So, line is parallel to xy-plane if all the points on the line have equal z-coordinate.

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