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determine whether a (2,7) b (-2,2) and c (2,-2) are the solutions of the system x-y=-4 3x+y=-4
determine whether a (2,7) b (-2,2) and c (2,-2) are the solutions of the system
x-y=-4
3x+y=-4
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Algebra 1
Authors: Mary P. Dolciani, Richard A. Swanson
(McDougal Littell High School Math)
9780395535899, 0395535891
