It’s b pls brainiest me have a Good day
Answer:
y = 24
Step-by-step explanation:
3x + y = 6
Solve for y
Subtract 3x from each side
3x -3x+ y = 6-3x
y = 6-3x
Let x = -6
y = 6 -3(-6)
=6+18
=24
This one is easy if u look at the pattern u would see it would be 4
Answer:

It is a perfect square trinomial.
Step-by-step explanation:
The given expression is 
We can use the formula 
Here, we have
a = 4xy, b = 3z
Using the formula, we have

Therefore, the equivalent expression is 
It is a perfect square trinomial.