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A point is in the XZ–plane. What can you...

A point is in the XZ–plane. What can you say about its y–coordinate?

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It is given that a point lies in the `XZ"-plane"`.
According to three-dimensional geometry,
If a point lies in the `XY"-plane"`, its `z"-coordinate"` is zero.
If a point lies in the `YZ"-plane"`, its `x"-coordinate"` is zero.
If a point lies in the `XZ"-plane"`, its `y"-coordinate"` is zero.
Conclusively,
If a point lies in the `XZ"-plane"`, then its `y"-coordinate"` is,
`y=0`
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