Engineering
Mathematics
Plane and Its Different Forms
Distance from a Plane
Question
Which of the following is true for a plane?
None of the above

Value of z in a xy plane is zero.

Value of y in a zx plane is non-zero.

A locus is called a plane if the line joining any two arbitrary points on the locus is also a part of the locus.
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Solution
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Option A and C are correct 
A locus is called a plane if the line joining any two arbitrary points on the locus is also a part of the locus. and also Value of z in a xy plane is zero.