Rates and Proportionality Test p6

REVIEW QUESTION
Which best describes the information represented in this table?
Beats      20      40       60
Minutes    1        2         3

•  proportional
• non-proportional

In the equation y = 11x, what is the constant of proportionality?

• y
• x
• 11
• not enough information

What is the formula for a proportional relationship?

• y=kx
• y=k/x
• z=ykx
• y=ky

How can you find the constant of proportionality?

• k = y/x
• k = x/y
• E=mc²
• y = kx

Tags

CCSS.7.RP.A.2B

Time            1 hr     2 hr    3 hr
Distance       40      100    150
What can we say about this relationship between distance and time

• It is proportional, because the change is constant
• It isn't proportional because the change is constant
• The constant is 50
• It isn't proportional because there is no constant

Time               1 day   2 days   3 days
Cash earned      $5    $10         $15
What is the constant (k) ?

• 5
• 10
• 15
  0
• 30

What equation represents the relationship?

• y = 2x
• k = 2x
• 2 burgers per person
  x = 2y
• k = 2

Joshua can skate 15 km in 45 minutes. What is his unit rate in km per hour?

• 20 km/h
• 25 km/h
• 30 km/h
• 11.25 km/h

Alycia earned $24.60 in 3 hours. What is her unit rate in dollars per hour?

• $27.40 per hour
• $0.12 per hour
• $8.20 per hour
• $73.80 per hour

Movie ticket sales are as follows:
Adult: 20 tickets for $250
Child: 15 tickets for $71.25
Senior: 5 tickets for $37.50
How much does one (1) CHILD ticket cost?

• $4.75
• $7.12
• $56.25
• $12.50

Tags

CCSS.6.RP.A.3B