check whether the following points are collinearA(4,3) B(5,1) C(1,9)
Answers
Answered by
1
To find whether the points are collinear I am using slope method .
Slope = (y1-y2)/(x1-x2)
Slope for points (4,3) and (5,1).
m= (1-3)/(5-4) = -2
Slope for points (5,1) and (1,9).
m=(9-1)/(1-5) = 8/(-4) = -2
The slopes are equal with a common point (5,1) hence they are collinear .
You can also use distance method . Refer the picture .
Hope you are able to understand.
Slope = (y1-y2)/(x1-x2)
Slope for points (4,3) and (5,1).
m= (1-3)/(5-4) = -2
Slope for points (5,1) and (1,9).
m=(9-1)/(1-5) = 8/(-4) = -2
The slopes are equal with a common point (5,1) hence they are collinear .
You can also use distance method . Refer the picture .
Hope you are able to understand.
Attachments:
Similar questions