Why is coordinate plane called the cartesian plane




















See the other points in the figure for examples. The Cartesian plane is divided into four quadrants. These are numbered from I through IV , starting with the upper right and going around counterclockwise. For some reason everybody uses roman numerals for this. In Quadrant I , both the x - and y -coordinates are positive; in Quadrant II , the x -coordinate is negative, but the y -coordinate is positive; in Quadrant III both are negative; and in Quadrant IV x is positive but y is negative.

Points which lie on an axis i. Coordinates of the form x , 0 lie on the horizontal x -axis, and coordinates of the form 0 , y lie on the vertical y -axis. Names of standardized tests are owned by the trademark holders and are not affiliated with Varsity Tutors LLC.

Every pair of coordinates specifies a unique point on the ceiling and every point on the ceiling comes with a unique pair of coordinates. It's possible to extend this idea, allowing the axes the two sides of the room to become infinitely long in both directions, and using negative numbers to label the bottom part of the vertical axis and the left part of the horizontal axis.

That way you can specify all points on an infinite plane. Descartes' coordinate system created a link between algebra and geometry. Geometric shapes, such as circles, could now be described algebraically using the coordinates of the points that make up the shapes. Select personalised ads. Apply market research to generate audience insights.

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Russell, Deb. Coordinate Geometry: The Cartesian Plane. Math Glossary: Mathematics Terms and Definitions. Independent Variable Definition and Examples. Introduction to the Budget Constraint.



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