Hello, i am new to this site, an i was not sure where to post (as i am not in the US schooling system), i am doing AS level maths in the UK if this helps?

i need to rearrange equations to y=mx+c

5x+y=4

x-2y+6=0

x+2y=3

y-6=2(x+4) <-- No idea whatsoever.

I hope you can help me :S