Hi Sir, I would like to ask about plotting the constraint on the graph..if i have calculated the value of x and y..how do i decide which one will be on the y-axis or x-axis?
It does not matter which product you use for x and which for y. The graph will look different but the answer will be exactly the same.
However, if you have watched my free lectures you will know that you can no longer be asked to draw the graph in the exam!! However you are expected to understand the graph and can be expected to interpret a graph already drawn.