Answer:
hope it helps you see the attachment
Yes, you are correct.
You know that BC=DC (given) and AC=CA (reflexive property).
You just need to know that <ACB≅<ACD.
Then you can prove the two triangle congruent through SAS.
you didnt provide any info over the question
y = 7 + 5/(x-6)
That should work.
Hope this helps!