WordaMariaMeu WordaMariaMeu

14-09-2016
Mathematics

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If f(x) varies directly with x, and f(x) = 12 when x = 8, write the direct linear variation equation.

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Hussain514 Hussain514

15-09-2016

f(x) varies directly with x.
f(x) = kx (k is the constant of proportionality)
if x = 8,
12 = 8 k
k = 12/8
k = 3/2
So the equation would be:
f(x) = (3/2)x

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