7.4 – page 421. TRANSLATIONS & VECTORS Page 1 of 2
Linking chapter 7 vectors
to chapter 9
VECTOR:
A quantity that has both direction and magnitude, or size and is
represented by an arrow drawn between two points
The vector is named PQ, which is read as “vector PQ.”
INITIAL POINT – starting point
TERMINAL POINT
– ending point
3 units up
(vertical movement)
5 units to the right (horizontal movement)
The COORDINATE NOTATION of this vector PQ is
The COMPONENT FORM
‹5, 3›.
DIRECTION
 Direction of a vector: determined by the angle it makes with a
horizontal line.
 Real-Life: north, south, east, west
 Coordinate Plane: x-axis represents an east-west line, y-axis
represents a north-south line
7.4 – page 421. TRANSLATIONS & VECTORS Page 2 of 2
Lesson 9.7
Linking chapter 7 vectors
to chapter 9
MAGNITUDE
Magnitude of a vector: the distance from the initial point to the
terminal point.
Use the Distance Formula to find the Magnitude of a vector.
Sum of two vectors: