SOLUTION: let (x1, y1)=(-6,-3) and (x2,y2)=(-4,5). Find y2-y1/x2-x1 and y1-y2/x1-x2 are the results the same?
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Question 486001: let (x1, y1)=(-6,-3) and (x2,y2)=(-4,5). Find y2-y1/x2-x1 and y1-y2/x1-x2 are the results the same?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Better than that, let \ =\ (a,c))
and \ =\ (b,d))
.
Factor -1 from )
:
(-d\ +\ c)\ =\ (-1)(c\ -\ d))
Likewise:
(-b\ +\ a)\ =\ (-1)(a\ -\ b))
So, by substitution:
(c\ -\ d)}{(-1)(a\ -\ b)})
.
But since 
(c\ -\ d)}{(-1)(a\ -\ b)}\ =\ \frac{c\ -\ d}{a\ -\ b})
.
But
.
also. Therefore:
John
My calculator said it, I believe it, that settles it
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