Mathematics Paper 13 marking scheme is messed up?!

[HubbaBubba]

I can't check and mark my answers, because the marking scheme is either blank, or too vague! It literally says in one of the answer parts

y =



[5]

Can anybody help me find a marking scheme for this paper!

 

[HubbaBubba]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w12_ms_13.pdf

Here's the file. It looks weird!

 

[PANDA-]

There are marking schemes that look even worse... idk what's the problem but eh.