prove that the points (-1,-1),( 2,3), (8,11) are collinear
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- Prove that the points (-1,-1), ( 2,3), (8,11) are collinear.
There are 4 methods to show that 3 points are collinear :-
- 1. Using Distance Formula
- 2. Using Section Formula
- 3. Area of triangle is 0.
- 4. Slope Method.
So, here slope method is used in this solution.
Method :-
- Find the slope of AB.
- Find the slope of BC.
- If, slope of AB = slope of BC
- ⇛ AB || BC
- ⇛ Points A, B, C are collinear.
Let the coordinates be A(-1,-1), B( 2,3), C(8,11)
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