exam Maths Puzzle Numerical Ability

This problem is a matrice problem:)

1 -3 4
0 2 6
-3 1 -1

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exam Other Question

Complete the table of values and graph the line:
2x-y=6 tan^2([pi]/2-[theta])csc^2[theta]+csc^2[theta]=1/sin^4[theta] can you help me verify if this is correct