what is x+2y=6 and x-y=3 in slope intercept form?

x+2y=6    subtract x from both sides

2y  = -x + 6     divide through by 2

y = -x/2 + 3

y = (-1/2)x + 3

and x-y=3      add y to both sides, subtract 3 from both sides

x - 3   = y 

y = x - 3