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OpenStudy (iwantanswers):
Which of the following is an example of direct variation? y = 2x, 4 = xz, xy = z, or xz = y
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OpenStudy (anonymous):
y=2x
OpenStudy (iwantanswers):
how do you know?
OpenStudy (anonymous):
Can you see that y/x=2
OpenStudy (anonymous):
Which means that y increases as x increases
OpenStudy (anonymous):
Direct variation is an equation in the form y = kx, or y/x = k. Now, we just compare this to the answer choices, and get (A), y = 2x.
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