Answer:
1. Which of the following is NOT a linear function?
B. y^2= 2x-4
2. Which best describes the linear equation y=0?
C. It is the equation of the x-axis
3. What is the slope of the line described by the equation 6x-9y= 15?
C. 2/3
4. Consider the table below which shows the cost of mailing a 1-ounce letter in different years via the US Postal Service. During which time period was the rate of change in the cost the least?
A. 1988-1990
5. What is the slope of the line graphed below?
D. 1/2
