Graph 1 would be the answer
Well, put x=0 then y=4
x=6 y=0
x=3 y=2
Now plot the graph :)
Keep in mind that, when the logarithm base is not explicitly written, base 10 is assumed, therefore,
Y is the number of movies
x is the number of hours
It takes 2 hours per movie
Thus:
y = x/2
2y = x
x - 2y = 0
The answer is C