1.	Find the magnitude of the vector from X(-4, 7) to Y(3, -4).
		A.		B.
		C.		D.
		Hint
	2.	Let and . Find .
		A.		B.
		C.		D.
		Hint
	3.	Find the magnitude of the vector .
		A.		B.
		C.		D.
		Hint
	4.	A vector that is represented by an ordered pair can ________ be written as the sum of unit vectors.
		A.	sometimes	B.	always
		C.	usually	D.	never
		Hint
	5.	If , then = _______.
		A.		B.
		C.		D.
		Hint