Answer:
-6
Explanation:
Given the line with the equation 6x +y = -3, you want the slope of a parallel line.
Slope
The slope of the line will be the coefficient of x when the equation is written in slope-intercept form:
y = mx +b
Solving for y, we get ...
y = -6x -3 . . . . . . subtract 6x
The slope is seen to be m = -6.
A parallel line will have the same slope: -6.