Graphing the system of equations is shown in figure attached.
Solution set is (2,-4). The lines will intersect at (2,-4)
Step-by-step explanation:
We need to graph the system of equations. 
First we will find value of x and y
Let:

Add eq(1) and eq(2)

Putting value of x in eq(1) and finding y

So, y=-4
Graphing the system of equations is shown in figure attached.
Solution set is (2,-4). The lines will intersect at (2,-4)
Keywords: System of equations
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Answer:
The number in the green box should be 3.
Step-by-step explanation:

In order to solve you get x by itself:
5-x=12
-5 -5
-x=7
divide by negative 1
Increasing
Increasing
Decreasing
t=3
t=14
V=4
Answer:
8
Step-by-step explanation: