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Given the following equation: $$(120.2+y)(1-z)=x$$ and the following known solution: $$ \begin{cases}x=1.3\\ y=0\\ z=0.8912 \end{cases} $$

1) Is it possible to get the function showing the graph for all $z$ and $y$, given that $x=3$?

2) How do I do it?

3) Is it possible to do it with Excel?

Discussion: I'm pretty sure this is doable and that I did it in the university, but it's been 15 years and I've forgotten how. In my mind this is calculus or algebra or can be solved with diff-equations somehow.

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    Put $x=3$, then you have the equation $(120.2+y)(1-z) = 3$. Easy to solve for whichever variable you want. Then plot the graph. – 2017-01-13
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    Soo easy I feel so humbled, thank you :-) – 2017-01-13

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