Your answer is x+19=<span>8.2</span>
Answer:

Step-by-step explanation:
we know that
Applying the Intersecting Secant Theorem

substitute the values

Solve for ED



The answer is the the second or B
To find if something is a parallelogram, they 1 set of line segments need to have the the slope. In this equation, Slope equals x1 + x2 divided by y1 + y2 (Or the other way around, x2 + x1 divided by y2 + y1)

For your other point, it could be (-4,5)
If this is confusing, please tell me! I'll try to better explain. It also helps to draw out a graph so you can plot the points.