First you have to find the equation of the line we have in the figure. I think that you should know how to find it.
We know that f(0) = 2 and f(-3) = 0
Therefore the equation is y = 2/3 x + 2
<=> y - 2/3 x = 2
<=> 3y - 2x = 2
Two lines are parallel if and only if for Ay + Bx = K, A and B are equal in both equation, and K being a constant.
Therefore in this example, any line that has an equation such as 3y - 2x = K is parallel to the line that is in the figure.
The correct answer is A.
Hope it helps, and sorry for my english