The answer to A is the pic below
The answer is 16. I’ve done this before and i got a 100% on it! Good Luck!!
Answer:
The Euclidean distance between the two given points is
.
Step-by-step explanation:
K-NN is used to predict the variable y for a new point with 
Distance is calculated in the Euclidean sense.
The Euclidean distance between two points is given by the formula:

The point is 
The Euclidean distance between the two points is given by:

Thus, the Euclidean distance between the two given points is
.
So what you want to do is draw a circle, then draw one straight across the middle and then one straight top to bottom! :)
2x + y = 8
3x - y = 17
---------------add
5x = 25
x = 25/5
x = 5
2x + y = 8
2(5) + y = 8
10 + y = 8
y = 8 - 10
y = -2
solution is (5,-2).....this is consistent and independent because it has one solution