7.4A, C + 7.7A

As a school carnival, tickets can be purchased to participate in different activities. The table shows the total cost for 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

The cost of 3 pounds of grapes is $6.57. What is the constant of proportionality that relates the cost in dollars, y, to the number of pounds of grapes, x?

• 6.57

• 3

• 2.19

• Not here

Consider the equation y = kx where y = 7.5 and x = 3. What is the value of k, the constant of proportionality?

• 22.5

• 4.5

• 0.4

• 2.5

Mark is a rock climber. His height, in feet, when climbing a wall can be represented by the equation h = 15t, where t is time measured in hours. Which best describes this proportional relationship?

• Mark moves 15 feet per hour.

• Mark moves $\frac{1}{4}$ feet per hour.

• Mark moves 4 feet per hour.

• Mark moves $\frac{1}{15}$ feet per hour.

Identify the constant of proportionality.

• k = 2

• k = 3

• k = 1.50

• k = 2/3

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality.

• k = 5

• k = 1/5

• k = 1

• k = 2.5

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Identify the constant of proportionality.

• k = 1/90

• k = 90

• k = 1/30

• k = 30

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Is the given table a proportional relationship? If so, what is the constant?

• Yes; 1/3
• Yes; 3
• Yes; 5
• No

Tags

CCSS.7.RP.A.2B

• A

• B

• C

• D

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x

Tags

CCSS.6.EE.C.9