exam Maths Puzzle Numerical Ability

Which of the following equations describe the same line as the equation 2x+3y=6?
(a) 4x+6y=12
(b) y= -2/3x+2
(c) x=3-3/2y
(d) 6-2x-y=0
(e) y=2-2/3x
(f) x+y=1

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