Answer: B
Explanation:
There are 2 ways to think of this. Proportional means that each time you increas you multiply by the same amount. so each time x increases by 2 y decreases by 1 every time so it is proportional
or
you can find the slope at different points of chart and if same then it is proportional
(2-1)/(-4-(-2) = -1/2
(0-(-1))/(0-2) = -1/2 they are the same so it is proportional
B