Katieann16
Which equation is an example of a direct variation?
A) y=2/3xz
B) 2xy=12
C) y=8/x
D) 2/3x=y



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Katieann16
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@jim_thompson5910

jim_thompson5910
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Hint: a direct variation is y = kx where k is any real number

Katieann16
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c?

jim_thompson5910
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that's an inverse variation equation

jim_thompson5910
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since it's in the form y = k/x

Katieann16
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ohhhh so a?

jim_thompson5910
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that's a joint variation equation, notice you have 2 variables on one side

Katieann16
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hmm b?

jim_thompson5910
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no lol, sounds like you're just guessing at this point?

jim_thompson5910
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choice B is another inverse variation equation, just in a different form

Katieann16
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ok d lol . and i thought d wasnt it cause of its form .

jim_thompson5910
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2/3x=y
y = 2/3x
its in the form y = kx where k = 2/3

Katieann16
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oh ok thank you

jim_thompson5910
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you're welcome