Direct Variation, Rate of Change, Constant of Proportionality

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

• -20 gal per minute

• -2 gal per minue

• 2 gal per minute

• 20 gal per minute

Tags

CCSS.7.RP.A.2D

Determine the Constant Rate of Change?

• -10 ft per second
• 15 ft per second
• 10 ft per second 
• -15 ft per second

Tags

CCSS.7.RP.A.2D

The temperature at noon was 88°F. By 4 P.M., the temperature was 72°F. Find the constant rate of change of the temperature.

• decresed by 4 degrees per hour

• increased by 4 degrees per hour

• decreased by 1.5 degrees per hour

• increased by 8 degrees per hour

Unit means...

• one

• two

• three

• proportional

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Which statement describes the rate of change of the line?

• $20 each week

• $30 each week

• $25 each week

• $70 each week

Tags

CCSS.7.RP.A.2D

What is the slope?

• $2 per mile drive
• $.50 per mile driven
• 2 miles driven per $1 
• 1 mile driven per $2

Tags

CCSS.7.RP.A.2D

Use the graph to calculate the rate of change.

• ^-1/₃

• -3

• 3

• ³/₂

Identify the constant of proportionality.

• k = 2

• k = 3

• k = 1.50

• k = 2/3

• none (not proportional)

Tags

CCSS.7.RP.A.2B

Which of the tables above represents a proportional relationship?

• a & c
• a, b & c
• a, c & d
• all of them

Tags

CCSS.7.RP.A.2A

What is the constant of proportionality?

• 2 swings / 1 day

• 0.5 swings / 1 day

• 4 swings / 1 day

• None of the above

Tags

CCSS.7.RP.A.2B