Answer:
b=4
Explanation and how to do the model
5b+2=22
-2 -2 by subtractive property of equality
5b/5=20/5 by division property of equality
b=4
As for the model, it would be great if you could specify what your teacher is looking for and I'll help you from there
Answer:

Step-by-step explanation:
Given



Required
The coordinate of the fourth point (C)
The given coordinates indicate the rectangle is vertical/horizontal because it has similar x and y values.
The coordinate of such rectangle can be represented as:




By comparing the general coordinates with the given coordinates, we have:
--- see A and B
--- see A and C
---- see C and D
--- see B and D
So, we have:


9514 1404 393
Answer:
all are functions except Relation 2
Step-by-step explanation:
If any input value (first of an ordered pair) is used more than once, the relation is not a function. Output values can be used as often as you like.
Only Relation 2 is not a function.