Melody

It means 

the measurement of angle bca.

I have only seen it a few times but that was what it meant.

I already answered this your lazy git.

You are very welcome.

There is a lot that can be learned from the way I have drawn the pic. See if you can get as much as possible out of it.  

Sorry,  Your answer is correct.

Good work.

y<2x-4

You can rearrange it.

Yes, better.

I think it will be at its biggest when the two numbers are as close in value as possible.

And it will be at its smallest when the two numbers are as far apart as possible.

You can do it now.

ok, thanks for answering :)