Answer:
CB / BA = ED / DC
Step-by-step explanation:
The rise is the distance in the y-axis or the distance that the graph ups, so there are two rises in the graph, CB and ED.
The run is the distance on the x-axis, so there are two runs in the graph, BA, and DC.
Then, the proportion of rise/run is constant so:

Therefore, the answer is :
CB / BA = ED / DC