When you give someone directions like go three block up and 2 blocks across.
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Yes, almost all the time. And when it is not coordinate planes it is coordinate hype-spaces (more than just the 2 dimensions that the coordinate plane allows).
Some inclined planes would be a wheelchair ramp, or a binder.
how are emeralds use in everyday life
When comparing data
Unless your "everyday life" involves work in some area of engineering, you won't use matrices in your everyday life.