not sure how to do this question: Consider the points (x,Y)=(3,8) and (100,40). Calculate the unit vector u pointing from the first to the second.

not sure how to do this question:Consider the points (x,Y)=(3,8) and (100,40). Calculate the unit vector u pointing from the first to the second.I was initially thinking of using the theorum sqrt(x^2+y^2) but i wasn't sure that was correct because my professor gave us a equation u=(d)/|d|.need help this is due tommorow morning at 9

Solution:Given: and Let vector between these two point be , then Unit vector point So, to