Answer:
3
Step-by-step explanation:
First you gotta take the equation and bring it to the following form:
[tex]y = ax + b[/tex]
The slope of the line is the coefficient of x, a.
In other words:
[tex]y + 4 = 3(x + 6) \\ y + 4 = 3x + 18 \\ y = 3x + 18 - 4 \\ y = 3x + 14[/tex]
So, as we can see, the number infront of x is 3. That is to say that the slope of this line is equal to 3.