Mathematics
19 Online
OpenStudy (thefluffmuncher):
1. Find the constant of variation for the relationship f(x)= 50x.
(Points : 1)
x
5
f(x)
50
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OpenStudy (thefluffmuncher):
is it 50?
OpenStudy (anonymous):
50.
OpenStudy (thefluffmuncher):
this is the equation right f(x)=kx
OpenStudy (thefluffmuncher):
@Loser66
OpenStudy (anonymous):
f(x) is called the function of x. ...xis the variable here, and 50 is the constant..
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OpenStudy (thefluffmuncher):
oh ok
OpenStudy (thefluffmuncher):
mind helping me with some more questions?
OpenStudy (thefluffmuncher):
2. Find the constant of variation for the relationship shown in the following table:
x 1 2 3 4
y 5 10 15 20
(Points : 1)
2
5
1
3
OpenStudy (thefluffmuncher):
i think it's 5
OpenStudy (loser66):
yup
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OpenStudy (thefluffmuncher):
thanks have some more mind helping?
OpenStudy (thefluffmuncher):
3. If f(x) varies directly with x, and f(x) = 10 when x = 4, write the direct linear variation equation.
OpenStudy (thefluffmuncher):
literally don't know how to go about on this one
OpenStudy (loser66):
why not?
OpenStudy (thefluffmuncher):
don't really understand it
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OpenStudy (loser66):
\(y =\color{red}{something}*x\rightarrow \color{red}{something}=\dfrac{y}{x}\) you have y =10, x =4
what stops you find the "something"?
OpenStudy (thefluffmuncher):
is it 2/5
OpenStudy (thefluffmuncher):
i mean 5/2
OpenStudy (anonymous):
or 5/2
OpenStudy (loser66):
yup
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OpenStudy (thefluffmuncher):
4. If f(x) varies directly with x, and f(x) = 45 when x = 9, find the value of f(x) when x = 3.
(Points : 1)
5
9
27
15
OpenStudy (thefluffmuncher):
do the same for this right
OpenStudy (loser66):
yup again
OpenStudy (thefluffmuncher):
i got 5=x
OpenStudy (thefluffmuncher):
but i'm not done am i?
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OpenStudy (thefluffmuncher):
is 5 going to be k?
OpenStudy (thefluffmuncher):
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