Answer:
you would find the slope from the midpoint to the endpoint and apply that to the other side, don't know exactly what the coordinates are.
Step-by-step explanation:
The answer is 1 bc the solution is (1,-3)
What are you trying to find? y?x?..???
Assuming you typed this correctly, and how you wanted it, then the answer(s) would be x=3, or x=8. Both answers are correct. If it were multiple choice, then the answer would look something like: X=3 or 8.
If you meant 2x, then the answer would be x=8/3. This is a fraction