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25.08.2019 •
Mathematics
If y varies directly as x, find the constant of variation k and the direct variation equation for the situation.
y=0.3 when x=0.6
find the constant of variation k.
k=
(round to one decimal place.)
then write the direct variation equation.
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Ответ:
Direct variation is simple. The formula you'll use to find the constant K is as follows:
y = kx
Once you've established your formula you simply plug in:
.3 = (k)(.6)
Then you solve for k by dividing both sides by (.6) thus getting:
(.3/.6) = k OR (1/2) = k
Your direct variation equation is your standard formula with only K plugged in:
y = (1/2)x
Ответ:
(2-3)*16-9+3=
32-48-9+3= 32-48-6
= -16-6= -25