Question

My question is : Write the ordered pair that represents the vector from A(0,-8) to B(-1,7). Then find the magnitude of AB

Answer 1

you can write as ordered pairs yourself.

Answer 2

Find the difference in the x-components, and that in the x-components, remembering that we are going FROM one pont to TO the other.
The difference in the x-comps is -1-0=-1.
The difference in the y-comps is ... ??

Answer 3

do you know how to find magnitude of a vector.

Answer 4

That makes sense! But I am at a loss on how to find the magnitude ;p

Answer 5

Hint: Pythagorean Theorem or distance formula or "magnitude of a vector" (suggested by surjithayer). The math involved is identical in these three approaches.

Answer 6

Alright! Thanks!