Hi
Using the point-slope formula, 
(1/6,-1/3) 
(5/6,  3)  m = 
Using the standard slope-intercept form for an equation of a line y = mx + b 
 where m is the slope and b the y-intercept. 
  y = 2x+ b
  3 = 2*5/6 + b  |using ordered pair Pt(5/6,3) to solve for b
  1/3 = b
      y = 2x + 1/3   OR 6x - 3y = -1