How do i do this i'm so confused ? ?

To find the slope you could use the rise/run method. 

To do this you would select any 2 points that's on the graphSuch as (2, 3) & (6, 4) 

Then from the point (2,3), count up (rise) Then over (run) until you get to the other point (6, 4) 

Which in this case is 1/4 (rise/run) which is the slope of the graph. 

Hope this helps! :) 

The answer to this question is c