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OpenStudy (anonymous):
Point B (-10, 30) lies on a line of slope -1. What must be the y-coordinate of A, if its x-coordinate is 27?
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OpenStudy (anonymous):
7?
OpenStudy (anonymous):
no -7
OpenStudy (anonymous):
just apply (y2-y1)/(x2-x1) = -1
OpenStudy (stacey):
This means that the change in y over the change in x equals -1|dw:1334983362652:dw|
OpenStudy (anonymous):
oh alright, that could be it. The problem is multiple choice and those are options haha.
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