Question 759816
Put into form y = mx + c
(y - 1) = -1/3(x - 3)
    y  = -1/3x + 1 + 1
     y = -1/3x + 2
All lines that are parallel have the same gradient i.e. -1/3
Using y - b = m(x - a)
      y - 5 = -1/3(x - 3)
      y - 5 = -1/3x + 1 
          y = -1/3x + 1 + 5
          y = -1/3x + 6
Hope this helps.
:-)