I thinks it’s B cuz you have to add plus 2 680 I think
X-5, y+9
because -5 then positive 5 up
Answer:
perfect square roots is when you have two of the same number that if you multiply them you get it. Example: the square root of 36 is six, because six times another six is 36- so 36 is a perfect square root number. 20 doesn't have a perfect square root because there are no two of the same numbers that will get you 20.
Slope Formula:

I am going to show you how to do this on problem 6, and you will do the rest of the problems.
Here are the steps to solving problem 6
Step 1) Substitute the coordinates into the slope formula

Step 2) Now Lets simplify the denominator, so we don't have two Subtractions symbols.

Step 3) Simplify

Step 4) We can still simplify more

Hope This Helps ... Good Luck
[The reason I didn't do all of them is because you need to know how to do them. Trust me later on knowing these is going to be very handy.]
Add all three expressions up and set them equal to 180 degrees, because there are 180 degrees in a triangle.