1. Unit 6 Trashketball Review

2. What is the equation of the line?
y = 3x – 1

3. This graph shows a proportional relationship of the number of people who have health insurance each year. Which of these statements is true about the graph?
For each year, 1 million more people have health insurance.
For each year, 2 million more people have insurance each year.
In 1992, 220 million people had health insurance.
In 1989, nobody had health insurance.

4. The graph shows a proportional relationship between the number of rides and total cost for rides at an amusement park. What is the equation that represents this data?
y = 5x

5. The table shows the cost to rent a jet ski for various hours
The table shows the cost to rent a jet ski for various hours. Write an equation to represent y, the total cost of a rental for x hours.
Hours, x
Total cost, y
100 1
150 2
200 3
250
y = 50x+100

6. The average speed for a biker on the Silver Comet Trail is 12 miles per hour. Write an equation to model the distance traveled, where y is the total miles and x is the number of hours.
y = 12x

7. According to the graph, what is the average daily temperature doing from day 1 to 3?
Increasing
Decreasing
Remaining constant
Unable to determine from the given data

8. The graph shows how much Javier had in his account each week
The graph shows how much Javier had in his account each week. According to the graph, how much did he start with in his account, and how much is he saving per week? $0
$10
Starting amount:
Savings each week:

9. Brian is practicing for a race. His speed is shown in the graph
Brian is practicing for a race. His speed is shown in the graph. What is happening to his speed from a time of 20 seconds to 70 seconds?
Increasing
Decreasing
Remaining constant
Unable to determine from the given data

10. Each day several leaves fall from a tree
Each day several leaves fall from a tree. One day a gust of wind blows off many leaves. Eventually, there are no more leaves on the tree. Choose the graph that best represents the situation.

11. Look at the graph. Based on the graph, how much money would you expect to pay for a distance of 200 miles?
$120

12. What type of association is shown in the table
What type of association is shown in the table? (Think: as x is increasing… what is happening to y?)
Negative

13. Number of video games played per day Number of video game wins per day
What type of association is shown in the table? (Think: as x is increasing… what is happening to y?)
Number of video games played per day
Number of video game wins per day 10 6 12 7 13 11 17 20 22 16 26 18
Positive

14. Based on the graph, what value of y would be appropriate for an x value of 0?73

15. The scatter plot shows the relationship between the outside temperature and total sales of ice cream. Determine which statement is false based on the data.
There is a positive association between the temperature and sales.
The hotter it is, the more sales are made.
There is a linear association between the temperature and sales.
The hotter it is, the less sales are made.

16. Which shows the line of best fit?A. B. C. D.

17. If the scatter plot has a positive association, which statement is true about the line of best fit written in slope-intercept form (y = mx + b)?
b > 0
b < 0
m > 0
m < 0 C

18. How much they charge each hour
A cleaning services charges are based off of the equation y = 30x + 10 where x = hours and y = total cost. What does 30 represent in the equation?
How much they charge each hour

19. A different cleaning service charges $25 per hour, plus a $20 service fee. How much would a 4 hour cleaning cost?
$120

20. The equation y = 5x represents the pollen count in Georgia in the spring, where x is the number of days since spring started and y represents the number of grains of pollen in a cubic meter of air. In the equation, what does the y-intercept represent?
How many grains of pollen there were in the air on the first day of spring.

21. The table shows the results of the number of 7th and 8th grade students that ate lunch at a local school. According to the information in the table, what is the total number of students that ate lunch that day?
Buy Lunch
Do Not Buy Lunch
Total
Seventh Graders 45 75
Eighth Graders 51 25
151

22. Using the same data, what percent of people who did not buy lunch were 7th graders?
Buy Lunch
Do Not Buy Lunch
Total
Seventh Graders 30 45 75
Eighth Graders 51 25 76 81 70
151
64%

23. 76 How many of the people surveyed were 8th graders? Buy Lunch
Buy Lunch
Do Not Buy Lunch
Total
Seventh Graders 30 45 75
Eighth Graders 51 25 76 81 70
151 76

24. 40% What percent of 8th graders bought their lunch? Buy Lunch
Buy Lunch
Do Not Buy Lunch
Total
Seventh Graders 30 45 75
Eighth Graders 51 25 76 81 70
151
40%