exam Maths Puzzle Numerical Ability

I struggle with inequalities and some equations, here is one that i have to graph: y=3/5x-4

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exam Other Question

Solve for x:
8(x – 1) + 3 = 7x – 6 – 5x 2x+y=6 and 1/2x+1/4y=1 and 1/3x-1/2=3 and -2x+y=4 I am having so much problems with these kinds of problems. please help.