Mathematics
Mathematics, 18.05.2021 06:50, craincrew5239

The variable z varies jointly with x and y. Also, z = -75 when x = 3 and y = -5. What equation describes this variation?

What is the constant of variation?
k =
When x = 1 and y = –2, z =

answer
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The variable z varies jointly with x and y. Also, z = -75 when x = 3 and y = -5. What equation desc...

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