Answer:
A (y=-2x)
Step-by-step explanation:
From the graph, we can see that the slope is negative, meaning that we can eliminate two of the answers given to us. Now, looking at the graph, we can see that the line passes (1,2) and (2,4). Find the slope: rise over run. rise is Y or 2 over run, X, 1. 2/1 is 2 (plus the negative sign)