exam Maths Puzzle Numerical Ability

Solve the following system by substitution

5x-2y= -5
y-5x=3

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exam Other Question

give the y values for x=-2,-1,0,1,2,3 for the function y=1/x-1 Find a value for k so that 9m(squared)- kn(squared) will have the factors 3m + 7n and 3m - 7n.

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