1.	An equation whose graph is a straight line is called a(n)________.
		A.	standard equation	B.	ordered equation
		C.	linear equation	D.	relation
		Hint
	2.	Which equation is a linear equation?
		A.	xy = 7	B.	3x + 3xy + y = 10
		C.	y2 = 9	D.	-2x = 5y + 1
		Hint
	3.	Which graph represents the equation y = -x + 4?
		A.		B.
		C.		D.
		Hint
	4.	Which table has correct ordered pairs for the equation x - 2y = 4?
		A.
		B.
		C.
		D.
		Hint
	5.	Which description does not fit the graph of x = -4?
		A.	The value of the x-coordinate is always -4.	B.	The line passes through the point at (0, 0).
		C.	The graph is parallel to the y-axis.	D.	The graph is a vertical line.
		Hint