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OpenStudy (anonymous):
The variable z varies jointly with x and y. When x=3 and y=8, z=6. Write an equation that relates x, y, and z?
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OpenStudy (anonymous):
for example it could be z=x+y-5. But this answer is not unique. May be there is some more conditions in the tsak?...
OpenStudy (anonymous):
What's the answer and how do I get it? I'm so confused.
OpenStudy (anonymous):
there are lots of equations that satisfy the conditions you've written. z=x+y-5 is one of them
OpenStudy (anonymous):
Thank you!
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