Find the slopes of a line passing through the following points :
(at21, 2at1) and (at22, 2at2)
Given (at21, 2at1) and (at22, 2at2)
To Find: The slope of the line passing through the given points.
The formula used: Slope of line = 
So, The slope of the line, m = 
m = 
m = 
[Since, (a2 – b2 = (a – b)(a + b)]
m = 
Hence, The slope of the line is 
2