Answer:
Option A is correct.
Explanation:
Given Equation of Line: 6x + 3y + 10 = 0
We have to find Slope.
We find Slope by rewriting the given equation in slope intercept form that is
y = mx + c where m is lope of line.
6x + 3y + 10 = 0
3y = -6x - 10


So, Slope of given line = -2
Therefore, Option A is correct.