exam Maths Puzzle Numerical Ability

determine whether each equation defines y as a function of x....

1. 2x+y=8
2. 2x+y^2=6
3. 3x^2+y=14

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exam Other Question

I hate math,and I need to write a 7 page paper on how it feels to go threw a math process, Can I get everybodys input. Solve the systems of equations graphically
{y=3x-12
{y=4x=2