Answer:
or -1 over 2.
Step-by-step explanation:
The slope of a line passing through points (a,b) and (c,d) is given by :-

From the given graph , the line is passing from points (-2,2) and (0,1).
Now, the of a line passing through points (-2,2) and (0,1) is given by :-

Hence, the slope of the line = 