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Mathematics 21 Online
OpenStudy (anonymous):

in the slope formula (http://bit.ly/hJO8Nh) and 2 points are given, how do you know which one to plug in for y1, y2 and x1, x2?

OpenStudy (anonymous):

Whichever has the larger x value is the second point.

OpenStudy (anonymous):

thank you!!

myininaya (myininaya):

you can do m=(y2-y1)/(x2-x1) or you can do m=(y1-y2)/(x1-x2)

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