Question

The unit vector that has the same direction as the vector from the point A=(−2,1) to the point B=(−4,2) is??

Answer 1

First find the vector AB, then normalize it.

Answer 2

how

Answer 3

\[\Large \vec{AB}=0B-0A \]
You subtract the x-corresponding values. End Point minus beginning Point. Same thing for the y-corresponding values.

This will give you the Vector AB. Do you know how to compute this vector now?

Answer 4

could u do it for me

Answer 5

AB= (-2 / 1)

Answer 6

so what do i do with -2/1

Answer 7

Do you know what the magnitude of a vector is?

Answer 8

Also known as the length?

Answer 9

yes. what do i do

Answer 10

You compute the magnitude of the vector, and divide by it, then you have an unit vector of length one.

Answer 11

k. is that the answer

Answer 12

After you have performed these steps, yes that's the answer.

Answer 13

k