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PMLeanear programming F-05

Ssathjyot15y ago
Dear all,

Can anybody please explain the 2nd question on June 2008 paper, why the product Snooker cues should be the horizontal axis and Pool cues should be the vertical axis? And what is the theory underlying in deciding which should be vertical axis and which should be horizontal?
Bbridmw15y ago#1
There is no theory but it's important you don't get confused.

Normal convention with the format X+Y=Constant puts X on the horizontal axis and y on the vertical, so it's easier when you construct your linear programming equations to follow this convention. So if you write the equations Snooker + Pool = Constant put Snooker on the horizontal - to prevent confusion

But regardless you should end up with the same decision point, the same two equations in your linear programming solution and the same answer.
Ssathjyot15y ago#2
I am afraid I did not get you,

Let me elaborate:-

The question given:-

Pool Ques Snooker ques

.50 .75
.270 .270

When I formulate the constraints , I tend to from equtions as follows:

0.50x + 0.75y

which is not the case here,the right one is 0.75x+.50y!!

When pool cues appeared first and snooker second I took it as .50x+.75y which not correct.

So my question is why Snooker is to be considred X and pool Y?
Ssids15y ago#3
Sthjyot,

I'd say plot the graph the way you normally do. On x- axis we put variables which are independent and on y-axis, variables which are dependent.
Technically your answer wouldn't be taken as a wrong one if you chose to plot snooker on the either of the axis.
Rrajad201015y ago#4
You can use any axis, the figures are simply mirrored. Although you should put an independent variable on x-axis and a dependent variable on y, if you have one.
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