SOLUTION: Using the distance formula, determine whether the following points are collinear:
A(0,4) B(7,-6) C(-5,11)
I thought i had to find the distance between A and B, and then B and C,
Algebra.Com
Question 259832: Using the distance formula, determine whether the following points are collinear:
A(0,4) B(7,-6) C(-5,11)
I thought i had to find the distance between A and B, and then B and C, and then A and C but I am not sure.
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
To determine colinear we need " slope" not distance. A(0,4) B(7,-6) C(-5,11)
The slope formula is
--
Using A and B we get
/
So, m = -10/7
--
Using A and C we get
/
So, m = -7/-5 = 7/5.
Since these are not the same, they are not colinear