Ok this is a pretty easy one.
2=22
3=20
4=18
Use H. 30 but just to let you know the x axis is along the bottom and the y is up and down. in order to pick a scale you need to fit all of the data points into the graph
ASWER.
1/6
FIRST
12 IS THE LOWEST COMMON DENOMINATOR
SECOND
1\3
4/3
=-5/12
THIRD 3 -5/12
= -2/12
=1/6
A) is counting down by 3
B) is counting up by 5
The answer to this, maybe.., is 180