which sentence explains why the slope of AB is equal to the slope of BC?

Answer:
Since AB = BE and DB =CE
Step-by-step explanation:
The ratio and of these two give the concept of slope
Answer:
Since AD=BE and DB=EC the proportion AD/BD is the same as BC/EC, so the ratio of the rise to the run is the same in each triangle.
Step-by-step explanation:
hope this helped:)