An
2/9 is the answer
Step-by-step explanation:
Answer:
5. D (4,6)
6. B (7.8)
Step-by-step explanation:
5. Add the two X coordinates (6+2) and divide that by 2 (8/2=4), do the same for the two Y coordinates (4+8=12, 12/2=6)
6. Use the distance formula 
Input the coordinates 
Answer:
y = -7x + 2
Step-by-step explanation:
The answer would be 157.07, with a radius of 25