Answer:
5
Step-by-step explanation:
Use the distance formula 
insert the numbers into the formula 
2+1=3 and 0-4=-4
=9 and 
= 1
9+16=25
the square root of 25 is 5
I could be wrong but i graphed it out and 9 is C , 10 is A , and 11 is C Hopefully it's right
Using the Slope Equation
Pick two points on the line and determine their coordinates.
Determine the difference in y-coordinates of these two points (rise).
Determine the difference in x-coordinates for these two points (run).
Divide the difference in y-coordinates by the difference in x-coordinates (rise/run or slope).
Answer:
Step-by-step explanation:
x= 1/4
