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Algebra
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OpenStudy (kaynick):
The points (−3,7) and (1,r) lie on a line with slope −1. Find the missing coordinate r.
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OpenStudy (anonymous):
The gradient of a line is found by x2 - 1/y2 - y1 1-- 3/r- 7 = -1 4/r-7 = -1 4= -r + 7 r= 3
OpenStudy (kaynick):
thank you :)
OpenStudy (anonymous):
Welcome
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