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Which system of linear inequalities is represented by the graph? !

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.