it is b because it has no numbers that repeat
Currently, he only makes 1/3 of his kicks. ... A number cube is being used to simulate the result of Bo's kicks where the numbers 11 or 22
If order matters, then there are 12 ways to do this
If order does not matter, then there are 6 ways to do this
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We have 4 choices for the first slot and 3 choices for the next (we can't reuse a letter) so that's where 4*3 = 12 comes from
If order doesn't matter, then something like AB is the same as BA. So we are doubly counting each possible combo. To fix this, we divide by 2: 12/2 = 6
To be more formal, you can use nPr and nCr to get 12 and 6 respectively (use n = 4 and r = 2)
Could you make the picture clear and back it up a little then i will see it better
Step 1: Find the slope:
Step 2: Set up your equation 
using one of the points.
Using (5,6) we have 
.
Using (6,10) we have 
Both of those equations would be correct.
