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07-02-2017
Mathematics

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if y= -5 when x=2,find y when x=8.

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Аноним Аноним

07-02-2017

y = kx
-5 = k (2)
k = -5/2

when x = 8
y = kx
y = -5/2 * 8
y = -20

answer is y = -20 when x=8

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