2/25 Mini-Assessment 8.1B Category 2

In a coin collection, the number of nickels is the same as the number of dimes. The number of nickels is 4 more than twice the number of quarters. The number of dimes is 3 times the number of quarters decreased by 16. How many quarters are in the collection?

• 44

• 20

• 23

• 22

• y = 300 – 20w

• y = 20w – 300

• y = 300 – w

• y = 300w – 20

Which table represents values that have a constant rate of change of 2?

• A. x | 0 | -3 | 5 y | 1 | -7 | 11

• B. x | 2 | 4 | 5 y | 5 | 9 | 11

• C. x | -6 | 1 | 0 y | -11 | 2 | 1

• D. x | 2 | 4 | -1 y | 5 | 8 | -1

Based on the data in the table, which of the following statements is true?

• The rate of change is 3.

• The rate of change is 1.

• The y-intercept is a negative number between -1/3 and 0.

• The rate of change is 2/3.

What is the slope of a line that contains the points (-2, 4) and (3, 14)?

• A 2

• B 0.5

• C -2

• D 1/6

x and y vary directly. When x = 12, then y = 18. What is the value of y when x = 30?

• 20

• 50

• 45

• 36

Which graph below represents a non-proportional relationship?

• A

• B

• C

• D

What is the unit rate or slope of the line that contains the values in the table?

• F 4

• G 3

• H 4/3

• J 3/4

Which set of coordinates describe a function?

• {(2, -4), (-2, -7), (0, 2), (-3, 8)}

• {(6, 2), (3, 5), (-1, 10), (-1, 7)}

• {(6, -4), (-3, -3), (-2, -2), (6, -8)}

• {(8, 4), (-8, -4), (2, 8), (2, 2)}

Which situation is a proportional relationship between x and y?

• Ms. Corona earns $14 an hour. What is her earnings, y, if she works x hours?

• A bag contains x red marbles. The number of blue marbles, y, is 2 more than twice the number of red marbles. What is the value of x?

• The larger of two numbers, y, is 10 more than the smaller number, x.

• Gabe has four less than the number of sports cards James has. Gabe has y cards and James has x cards. How many cards does James have?