1.	What is the distance between the lines with equations x + y - 5 = 0 and y = -x + 10?
		A.		B.
		C.		D.
		Hint
	2.	Find the distance between P(5, -3) and the line with equation 5x + 12y = 18.
		A.		B.	13
		C.		D.
		Hint
	3.	What is the distance between the lines given by the equations 5x - 2y = 14 and y = x - 9?
		A.		B.
		C.	0	D.
		Hint
	4.	PQR has vertices P(5, 8), Q(9, 5), and R(3, 2). Find the length of the altitude of PQR through point P (PQR Is not a right triangle, so there is only one altitude through P).
		A.		B.
		C.		D.	5
		Hint
	5.	Find the distance from the origin to the graph of 2x + y = 15.
		A.		B.	undefined (cannot divide by zero)
		C.		D.
		Hint