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# mathematics grade8 presentation(cartesian coordinate system)

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### mathematics grade8 presentation(cartesian coordinate system)

1. 1. Prepared by: Teacher:
2. 2. A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances from the point to two fixed perpendicular directed lines, measured in the same unit of length. Rectangular Coordinate System
3. 3. Each reference line is called a coordinate axis or just axis of the system, and the point where they meet is its origin, usually at ordered pair (0, 0). The coordinates can also be defined as the positions of the perpendicular projections of the point onto the two axes, expressed as signed distances from the origin.
4. 4. Different Parts of a Rectangular Coordinate System 1. The central point (0,0) is called the origin. 2. The horizontal line is called the x- axis, and traditionally denotes the independent variable. 3. The vertical line is called the y- axis, and traditionally denotes the dependent variable.
5. 5. ~Each quarter of the graph, as defined by the intersection of the axis, is called a quadrant, and are labeled I through IV, going clockwise from the top right.
6. 6. Cartesian Plane
7. 7. How are points plotted on the Cartesian Plane The position of a point on a Cartesian plane is represented by referring to it in terms of a horizontal line and a vertical line, which are called the x-axis and y- axis respectively. The point of intersection of the x-axis and the y- axis is called the origin.
8. 8. THE END