The third list. Median is the middle of the list, from greatest to least. The third list has 7 as its median. Ok. Next, the mode is the number that appears the most. 7 appears twice, while the other numbers appear once. Thus, making the third list our answer. :)
If the lines on the sides or top wich ever u decide remain parallel if u draw them out and they dont touch tehn its a parallelgram sorry for the miss spellings i suck at english
The slope is

and the y intercept is -1
so the equation is y =

x-1
Y-y1=m(x-x1)
y-(-2)=2/3(x-5)
y+2=2/3x-10/3
y=2/3x-10/3-2
=> y=2/3x-16/3