The answer to Question 5 would be C. (-2,-1.5)
Step-by-step explanation:

so you divide the top number with the bottom number and you would get (-2,-1.5)
The answer to Question 6 would be 17 (I'm assuming they want the distance between A and B)
So you'll need to use the distance formula (which will be here somewhere) to help you to understand better
Expanation on how I got 17 for an answer:

Hope this helped you <3