1. MA.8.A.1.1
Create and interpret tables, graphs, and models to represent, analyze, and solve problems related to linear equations, including analysis of domain and range, and the difference between discrete and continuous data.

2. Benchmark Description
Interpret tables, graphs, and models
Problems are not to be solved abstractly
Determine if data is discrete or continuous
Find domain and range of data

3. Benchmark Description

4. Sandy conducted an experiment with sound waves in dry air at 20C
Sandy conducted an experiment with sound waves in dry air at 20C. She observed that a linear relationship exists between the time and distance that sound travels under these conditions. She recorded her findings in the table below.
Based on the information in the table, which of the following is a valid statement about Sandy’s recorded findings?

5. A catering service charges a $50 setup fee, plus a set amount per guest, to provide food and beverages for a dinner party. Below is a table that lists the total cost of a dinner party for a certain number of guests.
What is the total cost, in dollars, if 75 guests attend a dinner party?

6. An airline has implemented a plan to reduce the occurrence of lost luggage. They have observed a linear relationship between the number of months the plan has been in place and the number of pieces of lost luggage. The airline recorded their findings in the table below. Which statement describes the data in the table?

7. Ingrid has determined there is a linear relationship between how far up the hill she starts skiing and the length of her jump on a ski jump. She has recorded her data in the table below. Ingrid decides to do a jump starting 90 feet up the hill. Based on her data, how far can she expect to jump?

8. A bicycle rental company charges a fee of $8 plus $4 an hour to rent a bicycle. Which graph could be used to find the cost of renting a bicycle for five hours?

9. At ABC Bowling Lanes, the group rate is $30 plus x dollars per bowler
At ABC Bowling Lanes, the group rate is $30 plus x dollars per bowler. The group rate also covers the cost for shoes and a bowling ball. The table below shows the total cost for three games of bowling for different numbers of bowlers. What is the rate (x) per bowler?

10. A car rental agency charges a one-time deposit of $55 plus a daily fee of $27 to rent an economy car. If this is represented by a function, where the rental cost c depends upon the number of days d that the car is rented, which value is in the range?
$27
$81
$108
$136

13. Benchmark questions were obtained from:
Floridastandards.org
FCAT Focus
Mastering the NGSSS – 8th Grade

14. Discrete or Continuous?
? ?

15. Hair color
Discrete, categorical

16. Light Intensity
Continuous

17. Gender
Discrete, categorical

18. Age
Continuous

19. Species of Animal
Discrete Categorical

20. Time
Continuous

21. Body Size
Continuous

22. Types of plants in a marsh
Discrete, categorical