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Mathematics 7 Online
OpenStudy (anonymous):

Evaluate each system below with the point (-1, -2/3). Select the system or systems which have the point (-1, -2/3) as a solution: a. -3x + 3y = 1 and y = -1 b. -2x + 6y = -2 and y = -2/3 c. x + y = -5/3 and x - y = -1/3 d. 3y = -2x and 2y = -3x e. -x + 3y = -2 and x = -1

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