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

Given points : C(3, 8) and D(-2, 5)
Then , the slope of a line passing through two points C(3, 8) and D(-2, 5) is given by :-

Hence, the slope of the line that contains the points C(3, 8) and D(-2, 5) is 
.