exam Maths Puzzle Numerical Ability

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d+4(d+6)=-1

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exam Other Question

i dont get any of it and i think i should chengeto regular 7th grade math instead in stead of skipping. for the function y= 1/x-2 give the values y for x = -1,0,1,2,3,4

please show work to help me understand this problem

using these points draw a curve