Answer :
According to the question, to calculate the relationship model of the given equations which are as follows:
[tex]z=30[/tex] when [tex]x =3 ; y=2[/tex]
And the condition is z varies jointly with x and y which can be represented as: [tex]z = \frac{k}{xy}[/tex]
Substituting the values to get the final expression:
[tex]30 = \frac{k}{(3)(2)} =\frac{k}{6}[/tex]
[tex]k=180[/tex]
Substitute the value of 'k' in the original equation. And the final expression is: [tex]z = \frac{180}{xy}[/tex]
What is function?
In mathematics, function can be defined as an expression or the rule or the law. It defines the relationship between dependent variable and the independent variable.
To learn more about the function model from the given link:
https://brainly.ph/question/7960522
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