SOLUTION: Find the slope of any line perpendicular to the line through points (9, 12) and (10, 4). I got -8 but I am not sure if it is right.

Question 76693: Find the slope of any line perpendicular to the line through points (9, 12) and (10, 4).
I got -8 but I am not sure if it is right.
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
Find the slope of any line perpendicular to the line through points (9, 12) and (10, 4).
The slope between these two points is -8, however, they are asking for the slope of any line perpendicular to the lines containing those two points.
The slope formula is:
, m=slope, (x1,y1) and (x2,y2) are given points.
(x1,y1)=(9,12) and (x2,y2)=(10,4)

The slope of any line perpendicular to this line would be it's negative reciprocal. That means you have to change the sign and flip it over.

Happy Calculating!!!!
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