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    CARTESIAN COORDINATE SYSTEM   6th grade

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  Problem 7.1. 

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  Problem 7.2. 

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  Problem 7.3. 

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  Problem 7.4. 

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)