exam Maths Puzzle Numerical Ability

How do you know if a value is a solution for an inequality?

How is this different from determining if a value is a solution to an equation?

If you replace the equal sign o

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exam Other Question

if the line containing points (-8,m) and (2,1) is parallel to the line containing points (11,-1) and (7,m+1), what must be the value of m? Find x in the solution of the system 3x+y=2 and 2x-3y=16.

Ths suggested answers are 2, -4, 18/11 and 10/11. Please be mindful that I do have to show my work. Thank you so very much!