Question

Let u = <-6, 3>, v = <1, 9>. Find u - v.

Answer 1

@jim_thompson5910

Answer 2

u - v is the same as u + (-v)

Answer 3

u + (-v) is the same as u + (-1)*v

Answer 4

how would i start

Answer 5

Just add the coordinates together.

Answer 6

but thats not one of the answers

Answer 7

<-15, 2>

<-9,-8>

<-5, 12>

<-7, -6>

Answer 8

you need to compute (-1)*v first

Answer 9

then you can add

Answer 10

i so far have
-6,3 and -1,-9

Answer 11

I thought you would just plug it in as they give you the eqation:
For the first you plug in -6-3 = -9
And then for the second one do the same thing....1-9 = -8
Your coordinates would be -9,-8
Isn't that how you are suppose to do it?? @jim_thompson5910

Answer 12

Now add those vectors melacho

Answer 13

-6 +3?

Answer 14

no you add the corresponding components

so

-6 + (-1) = ???
3 + (-9) = ???

Answer 15

<-7, -6>

Answer 16

correct

another way is you subtract the corresponding coordinates:

u - v = <-6, 3> - <1, -9>

u - v = <-6 - 1, 3 - 9>

u - v = <-7, -6>

Answer 17

either way, you get the same answer

Answer 18

THANK YOU SO MUCH♥

Answer 19

np