Find the vector v with the given magnitude and the same direction as u.

||v|| = 3

u = (4,-4)

A unit vector in the direction of u = (4, - 4) is given by (4/sqrt (4^2 + (-4) ^2), - 4/sqrt (4^2 + (-4) ^2) = (4/sqrt (32), - 4/sqrt (32))

A vector in the direction of u = (4, 4) with magnitude of 3 is 3 * (4/sqrt (32), - 4/sqrt (32)) = (12/sqrt (32), - 12/sqrt (32))