1.	Which graph shows a line with an undefined slope?
		A.		B.
		C.		D.
		Hint
	2.	Determine the slope of any line perpendicular to .
		A.		B.	3
		C.	-3	D.
		Hint
	3.	Find the value of x so the line that passes through (x, 6) and (10,-3) is parallel to the line that passes through (7, 2) and (6, 11)
		A.	-9	B.	9
		C.	1	D.	-71
		Hint
	4.	Which graph has a slope of zero?
		A.		B.
		C.		D.
		Hint
	5.	Determine the slope of the line parallel to the line shown.
		A.	1	B.	0
		C.		D.	-1
		Hint