exam Maths Puzzle Numerical Ability

This is not making sense to me. I don't understand how to get the inequalitites so I can graph.

3 - 3 > 6

3x + 2y > 12

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exam Other Question

given x^2-(6+3i)x+k=0 has a solution of 3, find the value of k, and find a second solution. I need help on how to write the statements and reasons for this proof