Answer:
Graph C is your answer
Explanation:
Draw the following graph using the easy coordinates, those are were y axis is zero, and the other were x axis is 0:

First point is (1,0) and the other (0,2)
The entire region that belongs to your graph is greater than drawn line.
Draw another graph using the same easy coordinates.

First point is (0.5,0) and the other (0,-1)
The entire region that belongs to your graph is lesser than the drawn line.
When you merge those graphs into one, you can clearly see that they correspond to the C answer.