1 and 2 are the only factors of 2
To calculate the slope, you can use the formula

In this case,

Your slope is 0/3, which does not make sense so there should be something incorrect about your points.
14 you are adding 3 to each number
The most common base used today is the decimal system which means 1 to 9.
The binary system is base two and it only uses the numbers 1 and 0. It does not go over 1. So base 5 is a number system that doesn’t go over four. It’s a little hard to understand until you do some questions relating to it.