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.	Write as a sum of unit vectors for A(3, -1) and B(8, 6).
		A.		B.
		C.		D.
		Hint
	4.	If , then = _______.
		A.		B.
		C.		D.
		Hint
	5.	Let C = (4, 17), D. = (-11, 2). Write as a sum of unit vectors.
		A.		B.
		C.		D.
		Hint