exam Maths Puzzle Numerical Ability

how do u make a graph out these of function problems?
1.y=2x+1
2.x-y+4
3.2a+3b=13
4.4y+3=2x
5.a-6b=-32
6.4m+3n=10

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exam Other Question

Find the indicated root.


(a+b)2



I have posted this question twice, so if someone could please show some mercy and answer this in a detailed, easy to follow step by step process, I would be so very grateful!

Find the axis of symmetry
y=x^2+7x+5