On a parallelogram, the vector from one vertex to another vertex is (9,-2). what is the length of the side? •7•√85•18•85

 Second Option is correct.

Step-by-step explanation:

Since we have given that

In a parallelogram, the vector from one vertex to another vertex is (9,-2)

So, the co-ordinate of first vertex will be (9,0).

And the coordinate of second vertex will be (0,-2).

As we know the formula for "Distance between two coordinates":

So, The length of the side is given by

Hence, Second Option is correct.