Answer: -28
7/2=3.5
3.5x-8=-28

Depending on the scenario you would either shade everything in between these two points or it can be any real number/ point on the graph.
There isn't much info to go on how they visually want to see it.
Like you could easily graph this as a number line and shade everything from 1 to 11.25 and put a solid dot on both sides.
Solution in attachment.
<h3>x = -6, y = 9, z = -3</h3>
1) Diagonals of a rectangle bisect each other, so AW=13.
2) Since diagonals of a rectangle are congruent, AC=BD. Then, since diagonals of a rectangle bisect each other, DW=13.
3) Diagonals of a rectangle are congruent, so BD=26.
4) Opposite sides of a rectangle are congruent, so AD=10.
5) Using the Pythagorean theorem, BA=24.
The areas would all be the same because they have the same side measurements.
Area = base x height
6 x 4 = 24 and will always be 24, so the area will always be 24.