# Chapter 12 - Vectors and the Geometry of Space - 12.2 Vectors - 12.2 Exercises: 9

$(3,1)$

#### Work Step by Step

$A(-2,1),B(1,2)$ Vector AB is the vector from A to B, find it by subtracting the corresponding components of A from B. $a=AB=\lt1-(-2),2-1 \gt =\lt 3,1\gt$ The equivalent representation starting at the origin is a vector from point $(0,0)$ to the point $(3,1)$.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.