In+a+city,+40%+of+people+have+black+hair,+30%+have+blue+eyes,+12%+have+both. +what+is+percentage+of+people+who+have+neither+black+hair+or+blue+eyes?.

y = - x - 2

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 = - + 6 ← is in slope- intercept form

with slope m = -

Parallel lines have equal slopes, thus

slope of parallel line = -

The line crosses the y- axis at (0, - 2) ⇒ c = - 2

y = - x - 2 ← equation of parallel line