Solution:
Slope of line joining two points ,
Take any two points that is , ordered pairs =(abscissa and Ordinate ), among four points given,suppose , (10,14) and (2,-2) or (2,-2) and (7,8).
So, if you choose any two distinct ordered pairs and find the slope between them using slope between two points , it will be equal to , 2.
Option D: 2