Answer:
1/2
Step-by-step explanation:
First we need to isolate -6y by subtracting 3x from both sides
-6y = 18 - 3x
Then we should divide everything by -6 to get 1y
y = -3 + 1/2x
Now we can put our equation into slope intercept form
y = 1/2x - 3
The slope is m, which is 1/2, and because all parallel lines have the same slope, the slope of our parallel line is also 1/2