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In the example the constraint is for executive chairs and in solution they are on x axis, whereas logically they should be on y axis. the solution if to plot this constraint on y axis is different. It gives a lower contribution. consequently also slack exists only for labour.
What is the correct decision to plot the executive chairs on x or y axis and how to proceed in future questions?
Thanks.
It does not matter in the slightest which axis you use for each product (I really do not understand why you say that logically executive chairs should be on the y axis – there is no logic involved 🙂 ).
The final answer will be the same whichever way round you have your axes – it is completely irrelevant.
I am sorry but usually we proceed from left to right, let standard chairs be x and executive be y. If it is from left to right, then the decision will be different. There is a difference in contribution of 15.
I am sorry, but you are wrong!
You don’t need to use the symbols x and y – it is more sensible to use symbols that more obviously represent the the products (I use S for standard and E for executive).
It does not matter which axis you use for which product – the final solution will be the same. (This is not a maths exam!)
In relation to your first question – there is no slack for either labour or materials in this example (how you show your axes makes no difference whatsoever to the solution. I cannot make a difference! The graph obviously is ‘turned round’, but that does not affect the solution at all).
I do suggest that you watch the free lecture going through this example again!!
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