These two lines are congruent (the same) so we can set them equal to each other and solve.
5x-4=3x+6
The first thing we need to do is subtract 3x from both sides leaving us with 2x-4=6
Now we can add 4 to both sides leaving us with 2x=2
Now we need to divide both sides by 2 to get x alone.
Giving us our final answer of x=1
Well, they are equivalent, but I'm not sure if that's exactly what you're asking. :)
The domain is the input values, which would be the numbers that have the arrows pointing away from them.
This would be the 4 numbers in the oval on the left side.
The answer is B. {1,2,3,4}
