exam Maths Puzzle Numerical Ability

4x squared minus 1

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exam Other Question

which of the following is an eqution of a line parallel to 4y-8=3x?
A.y=-3/4x+6
B.y=4/3x+2
C.y=-4/3x-1
D.y=3/4x
Please help me solve this equation:
5x+4y=12
I have tried the equation by doing this:
5x+4y=12
5x-5x+4y=12-5x
4y=12-5x
4y/4=12-5x/4
My answer came totaled to: y=3-5x