exam Maths Puzzle Numerical Ability

what is the answer to 2x+y=0
please explain the answer

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exam Other Question

Rewrite the equation 2x-3y=-6 as a function of x

Please help me on this to solve it.
A function notation problem

Thanks 2) Solve algebraically and check your potential solutions: cuberoot x+2-x=0

Answer:

Show your work here:

3) The volume of a cube is given by V = s3, where s is the l