The answer is 8/3 or 2 2/3 for the first one.
The domain is the value of x. In this case, -3≤x≤7
the range is the value of y. in this case, -1≤y≤9
this is not a function, because the same x value has two corresponding y values. For example, when x=5, y=0 or y=8
It IS a function if every x value has only one corresponding y value.
It would be 6 because the other short side is 6 so it should be 6 units
One Solution: Simplify to get 5x+4=5x+4