I think it's commutative property of addition (you can change order of addition but in the end it would be the same)
Answer:
The unit rate of change is of 
Step-by-step explanation:
We are given a set of points (x,y).
To find the unit rate of change, we take two points, and divide the change in y by the change in x.
Points (4,9) and (8,12)
Change in y: 12 - 9 = 3
Change in x: 8 - 4 = 4
Unit rate of change: 
Answer:
None
since the slopes are equal, it's either infinite or none.
since the ratios of Ys and Xs is 1, 18/16 should be 1 to say we have infinite answers. since it's not, the is no solution at all.
Answer:
x=34
Step-by-step explanation:
