Answer:
-2
Step-by-step explanation:
2y = -4x+8
y = -2x+4
so you want to make the equation this Y=mx=b
so lets do this!
4x+2y=8
-2y -2y
4x=8-2y
-8 -8
-4x=2y
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2 2
-2x=y
slope: -2