Question

Let u = <-9, 4>, v = <8, -5>. Find u - v.
URGENT

Answer 1

To subtract vectors, you simply have to subtract correspondent coordinates.

So, if you have

`u = \langle u_1,\ u_2,\ldots u_n\rangle ,\quad v = \langle v_1,\ v_2,\ldots v_n\rangle`

the subtraction is simply

`u-v = \langle u_1-v_1,\ u_2-v_2,\ldots u_n-v_n\rangle`

So, in your case, we have

`\langle-9,4\rangle-\langle 8,-5\rangle=\langle -9-8, 4+5\rangle=\langle -17,9\rangle`