It is used to see if a graph represents a function because if there is 2 dots or intersecting lines within the other lines then it is not a function. if there is only one line or dot, then yes, it is a function. hope i explained it well.
Answer:
(2,3)
Step-by-step explanation:
The given equations are:

and

Equate both equations:

Multiply through by 2:



x=2
Put x=2 into the first equation:


y=3
The solution is (2,3)
(4x-1) - 2(x+1) = 3x - (4x+2)
Use distributive property on left side:
(4x-1) -2x -2 = 3x - (4x +2)
Simplify both sides by combining like terms:
2x -3 = -x - 2
Add 1X to both sides:
3x -3 = -2
Add 3 to both sides:
3x = 1
Divide both sides by 3:
x = 1/3