Answer:
third option
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - 2x - 5 ← is in slope- intercept form
with slope m = - 2
Given a line with slope m then the slope of a line perpendicular to it is
 = -
 = -  = -
 = -  =
 =  , then
 , then
y =  x + c ← is the partial equation
 x + c ← is the partial equation
To find c substitute (- 1, 1) into the partial equation
1 = -  + c ⇒ c = 1 +
 + c ⇒ c = 1 +  =
 = 
y =  x +
 x +  ← equation of perpendicular line
 ← equation of perpendicular line