exam Maths Puzzle Numerical Ability

Please show me how to solve. inequality, giving its solution set in both interval and graph forms. and check the answer? Thanks1

-(9+K)-5+4K (> or equal to) 4

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exam Other Question

I am really confused with this homework problem.

I have two triangles that are congruent. The first triangle's measures are the sides of AB=13, AC=x(unknown), and the base BC= Find an equation in the form y=mx+b(where possible) for each line.
through (2,-1), parallel to 3x-y=1