1.	Determine which equation represents a function.
		A.		B.	y = -2x + 1
		C.	x = y2 - 1	D.	x = 4
		Hint
	2.	Which function is not linear?
		A.	f(x) = 2x3	B.	f(x) = 8
		C.	f(x) = 14x + 7	D.
		Hint
	3.	Find the y-intercept of the graph of 2x - 5y = 10.
		A.	5	B.	2
		C.	0	D.	-2
		Hint
	4.	Consider the formula F(c) = 1.8c + 32, where c is the temperature in degrees Celsius and F(c) is the temperature in degrees Fahrenheit. If it is 0° C at the beginning of the day, and it is 11° C at noon, what was the change in temperature in degrees Fahrenheit?
		A.	11	B.	51.8
		C.	-12.2	D.	19.8
		Hint
	5.	Given find
		A.	7	B.	–1
		C.	–7	D.	1
		Hint