So, they change depending on if you are talking to a male or female. "ma shlomcha" is addressing a male and "ma shlomech" is addressing a female. Hope that helps!
Why is there a dot in the final koph rather than the tiny T symbol underneath it? I assumed the one with the dot was pronounced "shlomech"?
Yes, the one with the two small dots inside the final chaf...Are you familiar with all of the vowels?
I thought I was, but obviously not! I thought the "ah" vowel was a tiny T under the letter, and that two dots meant no vowel? So I'd have expected "shlomcha" to have the T under the kaph, and "shlomech" to have the dots - but the one with the dots is pronounced "shlomcha", which is what is confusing me - it's the opposite way round to what I'd have expected.
No, you're right. :) The "little T" under a letter does say "ah." The two dots are a stop but it can also say "eh." So, the one that has the "little T" inside the final chaf says "shlomcha" and the one with the two dots inside the final chaf says "shlomech." Make sense? I'm sorry if I just added to your confusion! I think you've got it. :)