SOLUTION: show the following points are collinear A(-3,-2) B(5,2) C(9,4) prove line AB plus line BC is equal to line AC what will i do?? am i going to graph only and that's it???

Question 771459: show the following points are collinear
A(-3,-2) B(5,2) C(9,4)
prove line AB plus line BC is equal to line AC
what will i do??
am i going to graph only and that's it???
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
A(-3,-2) B(5,2) C(9,4)
you have to calculate the three distances
and then prove
l(AB)
Distance between two points
x1 y1 x2 y2

-3 -2 5 2
d=
d=
d=
d=
d= 8.94
l(BC)
Distance between two points
x1 y1 x2 y2

9 4 5 2
d=
d=
d=
d=
d= 4.47
l(AC)
Distance between two points
x1 y1 x2 y2

9 4 -3 -2
d=
d=
d=
d=
d= 13.42
4.47 +8.94 = 13.42
m.ananth@hotmail.ca

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