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Unformatted text preview: The Cartesian (or rectangular) plane is a plane with the Cartesian coordinate system imposed on it. We usually graph in the Cartesian xy-plane , though other variables could be used. We locate a horizontal line called the x-axis and a vertical line called the y-axis . These coordinate axes are real number lines ; at least one nonzero tick mark should be placed on each axis to indicate scale. The axes intersect at the origin , O . A point in the plane corresponds to an ordered pair of the form x-coordinate, y-coordinate ( ) . For example, the origin O corresponds to the ordered pair 0, 0 ( ) , and the red point below corresponds to 2, 3 ( ) . If we name the red point P , we can write P 2, 3 ( ) ....
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- Spring '09