exam Maths Puzzle Numerical Ability

How do I graph x ≥ 1? appreciate it...

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exam Other Question

find a polynomial of degree 3 with -2, 2 and 3 as zeroes. show your work How would I go about solving a system of equations with three equations and three variables.

4x-4y-z=38
x+4y-3z=6
-3x+2y-z=-14

Please explain step by step, I would appreciate it. Thank you.