show the points are collinear A(6,9) B(0,1) C (-6,-7)
Mathexpert:
To check the collinearity of three points, find the distance between pairs of points.
To check the collinearity of three points, find the distance between pairs of points. That means, find AB, BC and CA. If the sum of any two lengths is equal to the third one, then they are collinear. In this case, AB = 10, BC = 10 and CA = 20. That is, AB + BC = CA. Hence they are collinear.
Answers
Answered by
14
the points are not collinear
To check the collinearity of three points, find the distance between pairs of points. That means, find AB, BC and CA. If the sum of any two lengths is equal to the third one, then they are collinear. In this case, AB = 10, BC = 10 and CA = 20. That is, AB + BC = CA. Hence they are collinear.
Answered by
15
I don't think these points are collinear
To check the collinearity of three points, find the distance between pairs of points. That means, find AB, BC and CA. If the sum of any two lengths is equal to the third one, then they are collinear. In this case, AB = 10, BC = 10 and CA = 20. That is, AB + BC = CA. Hence they are collinear.
Similar questions