exam Maths Puzzle Numerical Ability

Hello,
Please graph the funtion y=f(x) then graph the inverse function y=f^-1(x) on the same grid.

Thank you

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exam Other Question

Can you please factor out completely 2x^2+xy-6y^2? Can you please help me?
find the variation equation for the variation statement.

z varies jointly as y and the cube of x; z=160 when x=2 and y=-5

Thanks again