I think that's what you mean
Yess what do you need help with
Answer:
-2
Step-by-step explanation:

When you insert the given points you get


Than you multiply the first one by - 1 and sum it with the second to get rid of n

Answer:
5b + 9
Step-by-step explanation:
You are essentially trying to simplify the expression given to you. To do so, combine terms with like terms:
4b + 9 + b
In this case, combine all terms with the same amount of variables, b.
(4b + b) + 9 = 5b + 9
5b + 9 is your answer.
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