What is the slope of the line?

3

Step-by-step explanation:

when you have a graph like this one and you need to calculate slope, all you need to do is count. first you count how many spaces are between the two dots starting from the lower dot and going up. since there are 6, you put 6 at the top of a fraction, like this 6/?. Then count how many spaces to the right the dot is. you will get 2 and then put that at the bottom fo the fraction, like this 6/2. you simplify the fraction and you get 3

360 different combinations

b) 36

step-by-step explanation:

18 times 2 is 36