Answer:
y = -3x - 12
Step-by-step explanation:
Lines that are parallel have the same gradient.
Therefore using the point (-2,-6) you can make your own equation.
-6 will be y, -2 will be x
All you have to do is find the y-intercept which is C in y=mx+c
-6 = -3(-2) + c
-6 = 6 + c
-12 = c
Therefore;
y = -3x - 12