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Mathematics, 18.01.2020 09:31 renee9913

The constant of variation k is
the value of z is

the variable z varies jointly with x and y. if z = 18 when x = 2 and y = 6, find the constant of variation, k, and then find the value of z when x = −4 and y = 5.

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The constant of variation k is
the value of z is

the variable z varies jointly w...
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