Answer is slope -8/3
Step by step
Slope can be found using two points from the graph and formula y2 - y1 over x2 - x1
(2, 2) (5, -6)
-6 -2 over 5 - 2 = -8/3
Try another set to be sure
(8, -14) (11, -22)
-22 - -14 over 11 - 8 = -8/3
So your slope is -8/3