exam Maths Puzzle Numerical Ability

Decide whether the values of the variables listed are solutions of the system of equations.

3x + 3y + 2z = 4
x - y - z = 0
2y - 3z = -8

x= 1, y= -1, z= 2

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exam Other Question
1.) k+1/2 < k/4+2 When solved the inequality k was = to 0, so the variable was 0! graph the function by making a table of coordinates
f(x)=4x