For question 6, I am uncertain of who is individual 13, it does not seem to be labelled in the picture.
For question 8, the condition seems to affect both males and females equally, though not in equal numbers, but you can see that not only males/ females is affected hence it is not sex linked. It is an autosomal trait. If the trait were to be autosomal dominant, a greater proportion of offsprings would be affected in each generation given an affected parent. The most telling would be where two parents were affected but about half of their offsprings remained unaffected. Hence the answer would be autosomal recessive.