Question

Answer with solution

Answer 1

In general, the scalar multiple of k times u, is this: 

$k\vec u = k(ux, uy)=(Kux,Kuy)$ 

So, here's how we find $3\vec v$ 

$3\vec v = 3 * (2,4) = (3*2,3*4) = (6,12)$ 

The answer is (6,12).

Answer 2

6,12 the other person explained it already