zykia1002
07.04.2021 •
Mathematics
Find b given that A (-6, 2), B (b, 0), and C (3,-4) are collinear.
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Ответ:
b = -3.
Step-by-step explanation:
If the 3 points are collinear then:
Slope of AB = Slope of BC and so
(0-2)/(b + 6) = (-4-0)/( 3 - b)
-4(b + 6) = -2(3 - b)
-4b - 24 = -6 + 2b
-24 + 6 = 2b + 4b
6b = -18
b = -3.
Ответ: