Respuesta :

Answer:

 y = -x - 3

Step-by-step explanation:

Slope(m) = -1

(0 , -3)

Equation:  y - y1 = m(x -x1)

y - [-3] = -1(x - 0)

y + 3 = -1*x

y + 3 = -x

       y = -x - 3