Respuesta :

TheHero
y = m x + b

m : slope 
b :intercept

m = -9 - 27/ 2 +2  = -9

y = -9 x + b

27  = -18  +b

b = 45

y = -9 x + 45
slope = (-9 -27)/(2 +2) = -36/4 = -9

y = mx + b
27 = -9(-2) + b
27 = 18 + b
b = 9

equation
y = -9x +9