Answer:
Slope = 0 (0/15)
Step-by-step explanation:
Slope can be found by doing rise over run of two points in this case (-6, 5) and (9, 5) where the rise is shown in the y axis or second position of the ordered pair in this case showing no change so 0 and run is found in the x axis or the first position of the ordered pair in this case the run is 15 giving you a slope of 0 or 0/15.