Three vertices of a parallelogram have coordinates (0,10, (3,7), and (4,4.) which point could represent the fourth vertex of the parallelogram?

To be a parallelogram, opposite sides needs to be parallel and equal in length.
From the given points you get the next:
As you can see above the only point that makes the figure be a parallelogram is (-1,4), it makes that side CD being parallel and have the same length that side AB
Answer: (-1,4)