SOLUTION: slope of BC = 4-2 divided by (over) -2-4 i don't understand? HELP PLEASE!

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Question 157225This question is from textbook Algebra tools for a changing world
: slope of BC = 4-2 divided by (over) -2-4
i don't understand?
HELP PLEASE! This question is from textbook Algebra tools for a changing world

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
m=Slope of BC.
Work it out.
m=%284-2%29%2F%28-2-4%29=%282%29%2F%28-6%29=-%281%2F3%29
The slope of line BC is -(1/3).