Linear Programming Graph on a TI nspire CX?

Thread Starter


Joined Nov 29, 2011
Hi, basically what I'm trying to do is solve a linear programming problem on an Nspire CX calc.

So say a question is given:

Maximise P = 7x + 11y, subject to:

x + 2y <= 30
x + y <= 20
x >= 0
y >= 0

Firstly, how would I graph a line with a single value for x, and infinite values for y? (ie x >= 0).

The rest I can graph with:

y >= 0
y >= 15 - x/2
y >= 20 - x

But trying to put x to the left of the (in)equality symbol throws up an error "Reserved name".

How do I graph it?

After that, how do I obtain a max value for 7x + 11y, within the 'feasible region' satisfied by all inequalities?

Thanks for any help.