Answer: 0
Step-by-step explanation:
The slope of a line passing through two points (a,b) and (c,d) is given by :-

The given points : (-3, 5) and (4, 5)
Then , the slope of a line passing through two points (-3, 5) and (4, 5) is given by :-
Hence, the slope of the line through the points (-3, 5) and (4, 5) = 0