Answer:
-2
Explanation:
Note that slope-intercept form looks like: y = mx + b
In this case, isolate the y. Note the equal sign, what you do to one side, you do to the other. Subtract 2x from both sides:
2x (-2x) + y = 6 (-2x)
y = -2x + 6
Note in the slope-intercept form: y = mx + b
y = y
m = slope
x = x
b = y-intercept
In this case, your slope is -2. All lines parallel to the given equation will also have a slope of-2.
~