1.	Determine the value of r so that the line through (5, 2) and (7, r) has a slope of .
		A.	3	B.	6
		C.	2	D.	1
		Hint
	2.	Determine the value of r so that the line through (r, 4) and (-7, 7) has a slope of .
		A.	3	B.	-3
		C.	9	D.	-11
		Hint
	3.	Determine the slope of the line graphed below.
		A.		B.
		C.	0	D.
		Hint
	4.	Determine the slope of the line that passes through (2, 2) and (5, 8).
		A.		B.
		C.	2	D.	-2
		Hint
	5.	Which line has a slope of and passes through (2, -4)?
		A.
		B.
		C.
		D.
		Hint