Constant Rate of Change and Proportionality

At a school carnival, tickets can be purchased to participate in different activities. The table shows the cost of different numbers of tickets. What is the constant of proportionality that relates y, the total cost in dollars to x, the number of tickets purchased?

• $4.00

• $0.25

• $1.00

• $0.10

Tags

CCSS.7.RP.A.2B

What is the formula for Constant of Proportionality?

• y = k + x

• y = k - x

• y = kx

• x = ky

Tags

CCSS.7.RP.A.2C

Cheddar Cheese cost $4.25 per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese?

• x = 4.25y

• y = 4.25x

• y = 4.25 - x

• y = 4.25 + x

Tags

CCSS.6.EE.C.9

The graph represents the linear relationship between the number of books Layla has read and the number of months she has been a member of a book club. Which of these statements is supported by the rate of change of this relationship?

• Layla read 2 books in the first 3 months she was a member of the book club.

• Layla read 3 books in the first 2 months she was a member of the book club.

• Layla read 3 books in the first 4 months she was a member of the book club.

• Layla read 4 books in the first 3 months she was a member of the book club.

Tags

CCSS.HSF.IF.B.4

What is the constant rate of change between the quantities in the table?

• $1 per hour

• $40 per hour

• $5 per hour

• $10 per hour

Tags

CCSS.HSF-LE.A.1B

The water level in a tank is changing at a constant rate. The graph shows the relationship between time in hours, x, and the water level in meters, y. Complete the statement that describes the rate of change of the water level with respect to time. Move the correct answer to each box. Not all answers will be used. The water level ​ (a)   at a rate of ​ (b)   m/h.

• decreases

• 0.25

• increases

• 1

• 4

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

What is the rate of change of the function?

Tags

CCSS.HSF-LE.A.1B

A constant rate of change is represented by a

• linear line.

• line that goes up.

• line that goes down.

• horizontal line.

Tags

CCSS.HSF-LE.A.1B

What is the constant rate of change in the function y=5x?

• x

• 5

• 1

Tags

CCSS.HSF-LE.A.1B

What is the rate of change for the graph?

• m = 1/2

• m = 2

• m = -1/2

• m = -2

Tags

CCSS.8.EE.B.5