Being dead honest with you less people will answer if there isn;t a photo, But I can't be 100% sure of my answer being there isn't one. 
(90,20)
(40,10)
40-90= -50
10-20= -10
-10/-50= 0.2
 Thats the slope line I used 2 random numbers, I don't know the order so it might be wrong. 
Well look at your graph are the lines going up or down as x increases?
From my assighment it is a increase.