EQAO - Education Quality and Accountability Office Grade 9 Mathematics Assessment Questions and Answers

Question 1

A cell phone plan costs a flat fee of $20 per month, plus an additional $0.15 for each gigabyte (GB) of data used.
Which equation correctly models the total monthly cost, C, for using 'g' gigabytes of data?

Accepted Answer

C = 0.15g + 20

Answer

C = 20g + 0.15

Answer

C = 20.15g

Answer

g = 0.15C + 20

Question 2

A cone-shaped paper cup has a height of 10 cm and a radius of 4 cm. Which of the following is the closest to the maximum volume of water the cup can hold? (Use V = (1/3)πr²h)

Accepted Answer

167.6 cm³

Answer

125.7 cm³

Answer

418.9 cm³

Answer

502.7 cm³

Question 3

The expression (3x² - 5x + 2) - (x² - 5x - 4) is simplified. Which of the following is the correct result?

Accepted Answer

2x² + 6

Answer

2x² - 10x - 2

Answer

4x² - 10x - 2

Answer

2x² - 2

Question 4

A scatter plot shows the relationship between the number of hours a student studies for a test and their final test score. The points on the plot generally trend from the bottom left to the top right. Which of the following best describes the relationship?

Accepted Answer

Positive correlation

Answer

Negative correlation

Answer

No correlation

Answer

Constant correlation

Question 5

A school trip requires 1 chaperone for every 8 students. If 112 students are going on the trip, how many chaperones are needed?

Accepted Answer

14

Answer

12

Answer

15

Answer

16

Question 6

Which of the following scenarios can be best modeled by a linear relation?

Accepted Answer

The total amount paid for a gym membership that has a monthly fee.

Answer

The height of a ball that is thrown into the air over time.

Answer

The area of a square as the length of its side increases.

Answer

The population of bacteria that doubles every hour.

A cell phone plan costs a flat fee of $20 per month, plus an additional $0.15 for each gigabyte (GB) of data used.Which equation correctly models the total monthly cost, C, for using 'g' gigabytes of data?

A cell phone plan costs a flat fee of $20 per month, plus an additional $0.15 for each gigabyte (GB) of data used.
Which equation correctly models the total monthly cost, C, for using 'g' gigabytes of data?