Answer:
y = 
 x -
 x - 

Explanation:
the equation of a line in slope-intercept form is
y = mx + c ( m is the slope and c the y-intercept )
here m = 
 , hence
, hence
y = 
 x + c ← is the partial equation
 x + c ← is the partial equation
to find c substitute (5, 1 ) into the partial equation
1 = 
 + c ⇒ c = -
 + c ⇒ c = - 

y = 
 x -
 x - 
 ← in slope-intercept form
 ← in slope-intercept form