you can see it this way, x = -(1/2)y² is just a horizontal parabola opening to the left-hand-side, the -1/2 is just a stretch transformation of the parent function x = y², but as much as it stretches, their vertex is the same, at the origin.
Your inequality would look like 7>w>2
Answer: I believe the answer to this question is: X= 1/5.
1) 61
2)7
3) 20,333.33333333333
2. alternate angles I think
3. vertically opposite angles
4. Interior angles