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. Plot the graph of the equations 2x - 3y = 6 and 2x + y = -10 and interpret the result.

2. Plot the graph of the equations 2x + 4y = 10 and 3x + 6y = 12 and interpret the result.

3. Determine graphically the vertices of the triangle, the equation of whose sides are given as y = x; y = 0; 2x + 3y = 10. Interpret the result