15 lines
815 B
Markdown
15 lines
815 B
Markdown
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---
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title: Coordinate Plane
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---
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## Coordinate Plane
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A coordinate plane is a plane in which a coordinate system exists, such that all points in the plane can be unique determined by an order tuple (most commonly a pair). A coordinate plane, as with a coordinate system in any number of dimensions, helps to transform problems in geometry to problems in algebra, and vice versa.
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The coordinate plane is often associated with Descartes. Hence, it is also known as Cartesian coordinates system.
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The 2-dimensional plane consists of a horizontal x-axis and a vertical y-axis.
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The point (0, 0) marks the origin of the plane. Any point to the right or left of the origin has a positive or negative x-coordinate respectively. Correspondingly, any point above or below the origin has a positive or negative y value.
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