Asked by Mike

is the slope of J(-4,6), K(-4,2) -4?
Answered by helper
slope = undefined
Answered by Mike
I thought you had to do 2 - 6/ -4 - -4 = -4/0 = -4
Answered by helper
-4/0 = undefined

You CANNOT divide by 0.
Answered by Mike
what would be the slope is it's 1/-8?
Answered by MathMate
If (x2-x1)=0 as in this case, the line is vertical, and the slope is... undefined.

Double check the question to make sure there is no typo.
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