2: Cartesian Coordinate System
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Mathematical figures in algebra are drawn in a system or plane called the
rectangular coordinate system
. Figures are particularly important for giving a visual representation of relationships between two variables.
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2.1: Definition and Label Quadrants
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The two perpendicular number lines intersect at the point (0,0) and is called the origin.
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2.2: Ordered Pairs
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Ordered pairs are pairs of numbers used to locate a point in the rectangular coordinate plane and written in the form (x,y) , where x is the x-coordinate and y is the y-coordinate.
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2.3: The Distance Formula
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The previous section taught how to plot points in the rectangular coordinate plane. This section teaches how to find the distance between any two points in the plane.
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2.4: Applied Examples
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In this section, apply the distance formula to find the lengths of line segments.