Determine if the two vectors, u and v, are equivalent. vector u has an initial point p1 and a terminal point p2 and v has an initial point at p3 with the terminal point p4. p1=(5,1), p2=(3,-2); p3=(-1,3) and p4=(9,-4) a. vector u and vector v are not equivalent vectors. b. yes, vector u and v are equivalent vectors