exam Maths Puzzle Numerical Ability

graph y=2x-3
graph x=-3
graph x+2y=6
graph y=-x+3
graph y=1.5x
graph y=2/3x-2
graph x+2y=2
graph y-x=1
graph x=-2
graph y=1/5x-1
graph 2x-y=1
graph y=-1.5x
graph x-3=0

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exam Other Question
This one can solved by writing as it in long division. Most of mine had ben easy but this one a lot different then the others.

7x^2+x-8/x-1 If you were to solve x^2 - 5x = 6 by factoring, which step would result?

I got:
(x+6)(x-1)=0

Thanks~