exam Maths Puzzle Numerical Ability

y=3x-1
and
y=negative2x

The x and y are the same in both problems.

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exam Other Question

1. Simplify 4x[(7x^2+2x-5)+(3x^2+9x)/3x]

2.Write down the coeficient of the term 4x^4y^2 in the algebraic expression 4x^4y^2z-3x^3y^2z+3/2xy^3z^2

3. Tom's uncle owns a triang My grandson is starting prealgebra this year. He is having trouble in the beginning with the technique of conversions. Any suggestions on how to make it easier for him?