We know that
The Triangle Inequality Theorem states that the sum of any sides of a triangle must be greater than the measure of the third side
so
Attached photo 1
...
therefore
the answer is
The value of y must be greater than 7
Attached photo 2
The Triangle Inequality Theorem states that the sum of any sides of a triangle must be greater than the measure of the third side
so
Attached photo 1
...
therefore
the answer is
The value of y must be greater than 7
Attached photo 2