y = -
x +

the equation of a line in ' slope- intercept form ' is
y = mx + c ( m is the slope and c the y-intercept )
here m = -
partial equation is y = -
x + c
To find c substitute ( - 5, 6 ) into the partial equation
6 =
+ c ⇒ c =
-
=

y = -
+
( in slope - intercept form )